Malicious PDF — malware analysis report

Static analysis result for SHA-256 046972d8c45cef30…

MALICIOUS

PDF

80.2 KB Created: 2021-03-25 17:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ff5b788a55b1d3fab58140846ecfd2f4 SHA-1: f2ccafabda0d0c64766233296d80bb6f44f53e26 SHA-256: 046972d8c45cef30f1e7704d9a1ee2d10f99969a354ac3a9d3ad5d8d8a8e3050
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/award?keyword=an+archdemon+s+dilemma+light+novel+pdf PDF link annotation
    • http://prizinsta.site/jevatitamulh74d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_604b8e3a971d6.pdfIn PDF document text
    • http://usesalon.xyz/who_invented_hot_potato_chipswmx1g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494166/normal_603a9a2892e4d.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/ZidsjcV/lethal_injection_survivor.pdfIn PDF document text
    • https://cdn.sqhk.co/lojadisexudo/ZfgigcH/my_lips_are_sealed_meaning_and_example.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374983/normal_5fe9e543a550a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450418/normal_5fe6225b40b02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502336/normal_6023df568f6a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407314/normal_5ff80eeeeb462.pdfIn PDF document text
    • http://forexgeeks.net/hulu_tv_guide_apple_tvvjlql.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwinoxaxava/1ghjihj/ganesh_bhagwan_photo_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/bubiwalifeda/giIjh89/6917771247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506170/normal_5fdc41eca9821.pdfIn PDF document text
    • https://cdn.sqhk.co/vetelovube/t7if0dL/gamokubabalozukizofofaj.pdfIn PDF document text
    • http://sk-anker.ru/80575251978bldct.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416672/normal_603016e74c121.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CDWhbqq/bamogapewinifusofenarilog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_603a6f4c9a777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404524/normal_605396d7d14e6.pdfIn PDF document text
    • http://smeh-mif.space/bubble_pop_game_free_online_gamesr59dn.pdfIn PDF document text
    • http://dogogitipujotab.22web.org/zadasobi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zavinawotomuvef.epizy.com/addition_and_subtraction_worksheets_5_digits.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7D 5620 bytes
SHA-256: 164735c668e254648122bb0f311e5c6c409bad045b3ebb8644a07ee7a32b7090
font_01_sfnt_off00010e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E76 10640 bytes
SHA-256: 3b73e44f2ea5deaa450fccca6a81b8656fb66922b4f3a635a517eb4a62c933ea

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