Malicious PDF — malware analysis report

Static analysis result for SHA-256 e65231a97c096262…

MALICIOUS

PDF

81.3 KB Created: 2021-03-12 04:46:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: eccd82ba6785e5ae5b8090c64cbab084 SHA-1: e6676da51d61e93e4f069c3674150cf88e1eae65 SHA-256: e65231a97c09626256cd554c1fc2c1a8ba05c6a3c4168a553fb7807009e2a0e1
164 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, with one prominent link pointing to 'jumiwimov.ru', suggesting a phishing lure or a download site. The document body, though heavily obfuscated, appears to be related to a 'guide', reinforcing the lure aspect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jumiwimov.ru/wix?keyword=ffx+expert+sphere+grid+guide PDF link annotation
    • https://cdn.sqhk.co/lafuwexale/igjijbr/mazebert_td_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/nurofiwele/Ekghjhj/13441398634.pdfIn PDF document text
    • https://cdn.sqhk.co/sugumujozik/jehegdB/68922000497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490724/normal_60203b0f75550.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417405/normal_604823a6aa2b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448121/normal_5fcdce549e0b8.pdfIn PDF document text
    • https://cdn.sqhk.co/xalesikozip/XgdQJKv/ruzenopuxejifita.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370052/normal_5fe41c4775629.pdfIn PDF document text
    • https://cdn.sqhk.co/lemisobe/gix5RZ7/lijejune.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386084/normal_5ffa82cd88c1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468267/normal_5fe0fb858a9f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_600a62bd0034a.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/fixararololu/como_saber_seu_ascendente_sol_e_lua.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/68962611990.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/apache_max_file_size.pdfIn PDF document text
    • https://e0a971b2-7104-4718-9e5f-4f17d768618f.filesusr.com/ugd/6d43b6_68ef0f6ddcb0426aad4ba3badcd12528.pdf?index=trueIn PDF document text
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_cc5640928e9d417aadf3700a66059ca4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wurivuve/best_dex_build_dark_souls_2.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/professional_software_developer_cv_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/ruzenugit.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_off0000f88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF88B 2940 bytes
SHA-256: b255dc2f10caa7cf961bab1172e8a2d2e5e83e097d684c71f73ac3a8f13737b6
font_01_sfnt_off00010309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10309 5084 bytes
SHA-256: f475fbd62d1da83e5b624c821a0ec8e257af683ab7f857205f71af647b7c5678
font_02_sfnt_off00011461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11461 10304 bytes
SHA-256: e8b5154e4d7511787c1b1d26810cb47f80dec6fde47208590f5290f5c64404e8

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