Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd002e1936559de4…

MALICIOUS

PDF

54.2 KB Created: 2022-12-21 06:16:54 +00:00 Authoring application: nikuche (via mPDF 8.1.2) First seen: 2023-12-10
MD5: 0827c2da9780f7267b1cafaabe3bb6e1 SHA-1: 62bbccdc968845bf37cf12d00fe26af87224552f SHA-256: dd002e1936559de4df44f12137429ef2d21d2fae15f6c07b2bf66d03e875d45e
259 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0169

Heuristics 8

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
    PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
  • PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://findthisall.com/Y3JlYXRpdmUgbGFicyBzYjAyMDAgZHJpdmVyIHdpbmRvd3MgNyAzMi1iaXQgaXNvIGRvd25sb2FkY3J/awarding.clothespin?ZG93bmxvYWR8RFo0TTJOcmQzeDhNVFkzTVRVME5qUXdOM3g4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA=influentials&reworked=&kambala=responsibly&rdas= PDF link annotation
    • https://player.soundon.fm/p/Welcome-2-Karachi-1-EXCLUSIVE-Full-Movie-In-H-amprIn PDF document text
    • https://player.soundon.fm/p/The-Babadook-Download-In-Hindi-18-BETTER-sinkoulorIn PDF document text
    • https://player.soundon.fm/p/Metastock-Professional-Free-Download-FREE-Cra-sotrIn PDF document text
    • https://player.soundon.fm/p/Cyberlinkpowerdirector9serialkeygen-LINK-samspelceIn PDF document text
    • https://player.soundon.fm/p/Taiji-37-Postures-Martial-Applications-Downlo-gasiIn PDF document text
    • https://player.soundon.fm/p/Adobe-Media-Encoder-Cs6-Amtlibdll-degadibetoIn PDF document text
    • https://player.soundon.fm/p/Train-Dispatcher-35-Password-Crack-NEW-chronetrathIn PDF document text
    • https://player.soundon.fm/p/Team-Extreme-Minecraft-172-Launcher-Free-Down-kakeIn PDF document text
    • https://player.soundon.fm/p/ManualDeLogicaClasaA9apdf-PORTABLE-ningterssurptomIn PDF document text
    • https://thelacypost.com/avrupa-iktisat-tarihi-pdf-18-hot/In PDF document text
    • https://jspransy.com/2022/12/20/eyeconnect-1-7-link/In PDF document text
    • https://3net.rs/wp-content/uploads/2022/12/Matematicas-Previas-Al-Calculo-Louis-Leithold-3-Edicion-WORK.pdfIn PDF document text
    • https://womensouthafrica.com/wp-content/uploads/2022/12/Idhu-Kathirvelan-Kadhal-Movie-FULL-Download-Tamilrockers-151.pdfIn PDF document text
    • https://ameppa.org/2022/12/21/blackwidowfull-patchedmovieinhindi720p/In PDF document text
    • https://superpageonlinepr.com/wp-content/uploads/2022/12/rozger.pdfIn PDF document text
    • https://asaltlamp.com/wp-content/uploads/2022/12/tasardi.pdfIn PDF document text
    • https://nutacademia.com/wp-content/uploads/2022/12/reijani.pdfIn PDF document text
    • http://www.reiten-scheickgut.at/torrent-download-revit-2017-crack-repack/In PDF document text
    • https://orbeeari.com/wwe-survivor-series-install-download/In PDF document text
    • https://purosautosindianapolis.com/wp-content/uploads/2022/12/Drivers-Joystick-Eurocase-Eugaw610l.pdfIn PDF document text
    • https://foam20.com/wp-content/uploads/2022/12/ofenabi.pdfIn PDF document text
    • https://ku6.nl/wp-content/uploads/2022/12/cerejai.pdfIn PDF document text
    • http://communitytea.org/wp-content/uploads/2022/12/The-Little-Paris-Bookshop-Epub-Download-2021.pdfIn PDF document text
    • https://valentinesdaygiftguide.net/?p=178248In PDF document text
    • http://arabrothers.com/wp-content/uploads/2022/12/ramnis.pdfIn PDF document text
    • https://www.alconfin.it/wp-content/uploads/2022/12/PATCHED-Download-World-War-Z-2013-UNRATED-CUT-720p-BluRay-X264-DualAudio-English-Hindi-Ma.pdfIn PDF document text
    • https://mondetectiveimmobilier.com/wp-content/uploads/2022/12/Medieval-Total-War-2-Cd-Key-Crack-BETTER.pdfIn PDF document text
    • https://haulingreviews.com/wp-content/uploads/2022/12/jantzacc.pdfIn PDF document text
    • http://findthisall.com/y3jlyxrpdmugbgficybzyjaymdagzhjpdmvyihdpbmrvd3mgnyazmi1iaxqgaxnvigrvd25sb2fky3j/awarding.clothespin?zg93bmxvywr8rfo0ttjocmqzedhnvfkztvrvme5quxdom3g4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda=influentials&reworked=&kambala=responsibly&rdas=In PDF document text
    • http://dejavu.sourceforge.netFontsIn extracted file (font_02_sfnt_off0000a218.bin)
    • http://dejavu.sourceforge.netIn extracted file (stream_003_off00003963.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_003_off00003963.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseDejaVuIn extracted file (font_02_sfnt_off0000a218.bin)
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003963.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3963 20140 bytes
SHA-256: 7602fd1370af683d280e215a3a85276326afbcb111811536f69b8991cf7ad8a3
font_01_sfnt_off00006e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E18 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
font_02_sfnt_off0000a218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA218 26892 bytes
SHA-256: 440ba7b1b0fb2eb971275b07a98648fad327a18a6221b47420b3d824bf3a407a