Malicious PDF — malware analysis report

Static analysis result for SHA-256 875f5f0c9c203da3…

MALICIOUS

PDF

129.9 KB Created: 2022-07-18 04:37:39 +00:00 Authoring application: paddar (via PDF Master 1.0.1) First seen: 2026-05-04
MD5: a836e482f752855e71f5613d7482ce82 SHA-1: 4181bb2c3accb2697ec5a768ae50f3ab8b3d4e05 SHA-256: 875f5f0c9c203da38764abd2514c097e91d4c89275cbb8707c2b2983f542136b
234 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0007

Heuristics 7

  • 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.
  • 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://find24hs.com/ZG93bmxvYWR8TWQ2Y2pkclpIeDhNVFkxT0RBd05qWTVPWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/reflects.frward.VW5pU3Rvcm0gVjE2MiBaaXAgTWVnYQVW5.gaps/rally/rythmic/sensitive/squishy PDF link annotation
    • https://savebyzipcode.com/wp-content/uploads/2022/07/Confesiones_Rosadas_Samantha_Borgens_Libro_Pdf.pdfIn PDF document text
    • https://youtubemap.net/wp-content/uploads/2022/07/qampapi.pdfIn PDF document text
    • https://ofsnl.nl/wp-content/uploads/2022/07/Need_For_Speed_Most_Wanted_Magyarositas_Tool_VERIFIED.pdfIn PDF document text
    • https://vv411.com/advert/cyanogenmod-12-1-android-5-1-1-lollipop-for-huawei-y3-y360-u61/In PDF document text
    • https://thoitranghalo.com/2022/07/18/download-work-do-hard-disk-serial-number-changer/In PDF document text
    • https://www.tamtam.boutique/2022/07/18/solarwinds-engineers-toolset-v11-keygen-87-link/In PDF document text
    • https://mugnii.com/wp-content/uploads/2022/07/elwihors.pdfIn PDF document text
    • https://hellohermit.com/wp-content/uploads/2022/07/62d4e3925a608.pdfIn PDF document text
    • http://www.jbdsnet.com/?p=25455In PDF document text
    • http://bookmanufacturers.org/gun-club-vr-__link__-full-version-freeIn PDF document text
    • https://frameofmindink.com/wp-content/uploads/2022/07/Typingmaster_Pro_701794_License_Id_And_Product_Key_NEW-2.pdfIn PDF document text
    • https://hulpnaongeval.nl/wp-content/uploads/izotope_tpain_effect_cracked.pdfIn PDF document text
    • https://oceantooceanbusiness.com/wp-content/uploads/2022/07/gesswaly.pdfIn PDF document text
    • https://warshah.org/wp-content/uploads/2022/07/Wirecast_Pro_1302_Crack_x64_Free_Download_Full_Version_2020.pdfIn PDF document text
    • https://turkishbazaar.us/wp-content/uploads/2022/07/Download_Film_Tenggelamnya_Kapal_Van_Der_Wijck_FREE_Full_Mp4.pdfIn PDF document text
    • http://movingservices.us/?p=46826In PDF document text
    • https://kunamya.com/temple-run-game-for-pc-free-download-with-crack-__top__/In PDF document text
    • http://automationexim.com/roland-��-vs-flavr-series-funkyfever-concerto/In PDF document text
    • https://eskidiyse.com/index.php/ls-land-issue-07-cowboys/In PDF document text
    • https://roofingbizuniversity.com/wp-content/uploads/2022/07/Economia_De_La_Empresa_Michael_R_Bayepdf_PATCHED.pdfIn PDF document text
    • https://savebyzipcode.com/wp-In PDF document text
    • https://ofsnl.nl/wp-In PDF document text
    • https://frameofmindink.com/wp-In PDF document text
    • https://warshah.org/wp-In PDF document text
    • https://turkishbazaar.us/wp-In PDF document text
    • https://roofingbizuniversity.com/wp-In PDF document text
    • http://find24hs.com/zg93bmxvywr8twq2y2pkclpiedhnvfkxt0rbd05qwtvpwhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda/reflects.frward.vw5pu3rvcm0gvje2mibaaxagtwvnyqvw5.gaps/rally/rythmic/sensitive/squishyIn 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
font_00_sfnt_off00002b8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8D 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000b379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB379 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261