Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1df214fe8f749a…

MALICIOUS

PDF

92.5 KB Created: 2021-02-12 04:24:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8817e8227b52248c1f9db239eaf8f26f SHA-1: d485ee970dfdce6a71c4d7c482e40a826f7cf0c3 SHA-256: 3a1df214fe8f749a04a41db3cd2bf9488e8cf61e5c176485b4ea655e9ca47194
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://seumenha.ru/123?utm_term=play+dr+mario+unblocked PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478123/normal_6016d9eec3e82.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/raicjcr/26598350594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416305/normal_601d1f647728d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492275/normal_5ff696ed649d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470401/normal_5ff86ef42c499.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/ghf2jcg/vpn_private_app_which_country.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382771/normal_5fd7a0055757d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482415/normal_5fd18279ce5d7.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/jbbSiev/take_off_flight_simulator_mod_apk_obb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449419/normal_60010f559a5da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/bamakowebuxus.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/19494612250.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/99688557631.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/selodarabolokosumobo.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/direwixapite.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/niwubozaz.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/73158802279.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10626 3864 bytes
SHA-256: ebf15818c407f767e9a51e773de25ba77d934eb48f0eb31eb593b7abd6968fe6
font_01_sfnt_off000113e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E8 5212 bytes
SHA-256: eea79015773aaed81c4540cffb7a4014d510dca0189d9d24f81288b9b3787799
font_02_sfnt_off00012596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12596 12256 bytes
SHA-256: af257563b55095096e0e89d7daed67dee52a12e1e1400abbe579d32de36fd5a2
font_03_sfnt_off00014df9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DF9 16160 bytes
SHA-256: 007a374aec5d4d45bbdc67fde3c8c94fc6ccc240ada643b27ad8df5a7c26b0c8

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