Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a91fa97b9876dd…

MALICIOUS

PDF

254.9 KB Created: 2022-07-02 03:46:53 +02:00 Authoring application: hamyyar (via PDF Master 1.0.1) First seen: 2026-06-01
MD5: b261b9e75cab6695ebd16e12217a96ab SHA-1: 805de686add16ca4e42f50d6ce8e42f6b29506d4 SHA-256: 01a91fa97b9876ddf9f72f98beaab06535ecacb4c362e8c596d7bff3050d3c6a
137 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0005

Heuristics 6

  • 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.
  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://widesearchengine.com/?bcauses=dG9ycmVudCBkb3dubG9hZCBQb3dlckluc3BlY3QgMjAxNiBwb3J0YWJsZQdG9&nourisher=ZG93bmxvYWR8eE80TkdsNE4zeDhNVFkxTmpjeE1qTXdOWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/rebounders.aifare PDF link annotation
    • https://www.reperiohumancapital.com/system/files/webform/zeddavi465.pdfIn PDF document text
    • http://raga-e-store.com/video-rotator-4-4-crack-serial-key-mac-windows-work/In PDF document text
    • https://www.brookfield.k12.ct.us/sites/g/files/vyhlif4196/f/pages/advocacy_letter_from_brookfield_public_schools.pdfIn PDF document text
    • https://guaraparadise.com/2022/07/01/hassan-sadiq-qasida-mp4-free-download-link/In PDF document text
    • https://www.encremadas.com/wp-content/uploads/2022/07/Lobiettivo_Goldratt_Italiano_Pdf_16.pdfIn PDF document text
    • https://nysccommunity.com/advert/digital-signal-processing-by-venkataramani-and-bhaskar-pdf-30-hot/In PDF document text
    • https://myquicksnapshot.com/wp-content/uploads/2022/07/fauselis.pdfIn PDF document text
    • https://pionerossuites.com/boot-disk-pioneer-carrozzeria-avic-drv250-japan-ra-besser-internetaukti-install/In PDF document text
    • http://www.gambians.fi/mukadimah-khutbah-jumat-pdf-download-upd/training/In PDF document text
    • https://countymonthly.com/advert/aho-girl-07-vostfr/In PDF document text
    • https://www.artec3d.com/fr/system/files/webform/business_development/janavij763.pdfIn PDF document text
    • https://www.an.uy/upload/files/2022/07/Gk4yqQz9Jn9PRQtjCIMP_02_f7176701c7eb32023ef2d72ae823b155_file.pdfIn PDF document text
    • http://djolof-assurance.com/?p=23535In PDF document text
    • http://elkscountrygolf.com/2022/07/02/wow-3-3-5a-custom-mop-files-bot-_verified_/In PDF document text
    • https://www.greatescapesdirect.com/wp-content/uploads/2022/07/shawrash.pdfIn PDF document text
    • https://rebatecircle.com/wp-content/uploads/2022/07/Matematika_11_Ushtrime_Te_Zgjidhura_Pegi_132.pdfIn PDF document text
    • https://atmosphere-residence.ro/wp-content/uploads/cesyil.pdfIn PDF document text
    • https://www.cameraitacina.com/en/system/files/webform/feedback/hp-dmi-slp-v-14d-rarepub.pdfIn PDF document text
    • http://topfleamarket.com/?p=25101In PDF document text
    • http://www.kitesurfingkites.com/telugu-movies-720p-allah-ke-banday-download-best/In PDF document text
    • http://widesearchengine.com/?bcauses=dg9ycmvudcbkb3dubg9hzcbqb3dlckluc3bly3qgmjaxnibwb3j0ywjszqdg9&nourisher=zg93bmxvywr8ee80tkdsne4zedhnvfkxtmpjee1qtxdowhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda/rebounders.aifareIn PDF document text
    • http://www.tcpdf.orgIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00001a78.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A78 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
font_01_sfnt_off0000c85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC85B 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54