Malicious PDF — malware analysis report

Static analysis result for SHA-256 36fa97802800d21e…

MALICIOUS

PDF

78.4 KB Created: 2021-03-05 03:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f8d64cb42c6f7d8e181023dfe4b5650b SHA-1: 2967bd2d2462e27da488a319843d1d181c22400b SHA-256: 36fa97802800d21e8d116684cef2f129fc5b3d48367e3ee26325b0a33189b270
134 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or scam attempt, leveraging a lure for 'cracked software downloads'. The presence of numerous external links, including one pointing to a potential malware distribution URL, and the ML classifier's high confidence score strongly indicate malicious intent. The document's structure and embedded links suggest it's part of a link farm designed to redirect users to malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/wix?keyword=drastic+full+cracked+apk+download PDF link annotation
    • https://cdn.sqhk.co/zipirevofu/B7Q1The/gizasorixutap.pdfIn PDF document text
    • http://tevajevidiwa.22web.org/21216918151.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456121/normal_5fcdb6dd5f4cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_60146cf56e42a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501632/normal_5fcdd27e787e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489409/normal_6000c611ba88b.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/7193212.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473415/normal_5fcdba767070d.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/ge8jbSk/basketball_total_free_shot_line.pdfIn PDF document text
    • https://cdn.sqhk.co/womilepeba/fih0n5M/atomic_bomber_full_apk_uptodown.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369161/normal_600c05be325e8.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/fUlgdih/ketenisivuxureruxotujaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/jfdjhgh/domestic_electrical_wiring_diagram_symbols.pdfIn PDF document text
    • https://gewuvakir.weebly.com/uploads/1/3/4/6/134660990/975db3b1cf0f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374021/normal_5fcf43e84d0db.pdfIn PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/8f1487a21f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454665/normal_5fd7c1606f427.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://07bd7893-a6ec-44d5-90fe-c719e602c0bd.filesusr.com/ugd/aafaff_699e864c1a934b4e91826d8e50b59dad.pdf?index=trueIn PDF document text
    • https://6648aa49-deb3-4d6f-81a8-a63cc7a297fb.filesusr.com/ugd/38eac1_c8175b64fe0a4369bf237310e1e98b58.pdf?index=trueIn PDF document text
    • http://bagobopog.rf.gd/pudezazurudokexomif.pdfIn PDF document text
    • http://bitezopunofiwu.rf.gd/74780092601.pdfIn PDF document text
    • http://badizep.epizy.com/master_resilience_training_army_study_guide.pdfIn PDF document text
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_a2d9a70af2f64f51b20f7817ec12c504.pdf?index=trueIn PDF document text
    • http://wasaxotudulolo.epizy.com/albania_news_reporter.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_off0000f537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF537 5304 bytes
SHA-256: 965a34f06f2174965917eec7d4b5e213aa030081f099df2ee93f38cc4e422c91
font_01_sfnt_off0001076b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076B 10760 bytes
SHA-256: 1b3ff692fb37221d3ad936315d6a018456cacdd4f11f96f4b663f96d86f29201