Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4c819461922d7a…

MALICIOUS

PDF

79.9 KB Created: 2021-01-04 06:17:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3c6a1b4bd8713a6a32aa2f1741a11c99 SHA-1: dc6ff4e2a88cf4cfa650cb92f4c5e4e2a5fbe4aa SHA-256: 7b4c819461922d7abbe21482d66d95b20be8436bc833cea76bbb439fd5efb2b0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure, specifically pointing to 'ggtraff.ru'. The embedded URL and the ML classifier further support its malicious nature. Although no scripts were extracted, the presence of a malicious link strongly suggests an attempt to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://ggtraff.ru/wb?keyword=free%20diamond%20hca%20calculator In PDF document text
    • https://cdn.sqhk.co/gefimiwotux/oFZgeYC/kazozaxisivemiwowapijefad.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/giahegg/47110077083.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/iNXihgh/pressure_washer_wand_home_depot.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/kfEibCN/elton_john_songs_released_in_the_80s.pdfIn PDF document text
    • https://cdn.sqhk.co/safimowexaw/Yxdn7VI/79293952557.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7b378a0d-d1ce-4e98-bf34-9544d5557eea/bewivikenufulediwuful.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e44a01-55dc-4e7a-a28b-86bfffe02b67/paintball_battle_royale_gun_shooting_battle_arena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f55e1b-5d3a-46bd-9184-c477fcab411c/the_stepford_wives_2004_full_movie_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2630e26d-25f1-463d-b3dd-4baa6237024e/37429782899.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de8c7a92-2c87-4760-b603-88a6e0202a01/tuxosenowos.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/zumufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2bd8c56-fdc2-4654-8482-4b3b155b0aaf/nelson_nash_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd7203f2-39c4-48b2-aeff-fa2dcf5bc5e5/85964800127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72846c89-bb7b-4216-b32b-5febbbc69104/35051398362.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/elfin_lakes_trail_report.pdfIn 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/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F9 4840 bytes
SHA-256: 330a1312d1623b38668c7a9ed206b3ae2ea9fa272616fe8e599a8796ad29ea9e
font_01_sfnt_off00010134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10134 10400 bytes
SHA-256: ec1735061a265cc1915382fc31cbc26beb6c1bc7146f51dc1eb8aa71c9275a47
font_02_sfnt_off000124c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C9 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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