Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd6e0acf445cf87…

MALICIOUS

PDF

77.2 KB Created: 2021-01-31 05:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e55b8cf7a335ffe5e3170421c97f9028 SHA-1: 9b7a8b220ccb5352bb8cc08946a2bf5d36ef9b1d SHA-256: 1cd6e0acf445cf879df2b65fb82849533d879ca7d2b80274b5a3c4d819887253
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • 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://druttle.ru/wb?keyword=idle%20planet%20miner%20challenge%20guide PDF link annotation
    • https://gumopokexu.weebly.com/uploads/1/3/0/8/130814161/buxazotufafabo_motofevufuvim_revitesetusuji_tekirebuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415304/normal_5fc8b758e55a5.pdfIn PDF document text
    • https://cdn.sqhk.co/silinetufid/ggjcNja/ruzatozizar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413703/normal_6005496f90366.pdfIn PDF document text
    • https://cdn.sqhk.co/pupumukisev/gdsAhgj/miniclip_games_zombie_defense_agency.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/ONNKBha/7921635713.pdfIn PDF document text
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/debibolase_sabezepu.pdfIn PDF document text
    • https://dinofewujib.weebly.com/uploads/1/3/1/3/131379591/8cae2caea15b.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/6Lha7gi/susewow.pdfIn PDF document text
    • https://vuxijegeb.weebly.com/uploads/1/3/2/3/132302810/6dbf3.pdfIn PDF document text
    • https://xidelesa.weebly.com/uploads/1/3/4/4/134498911/eed61f76268e9.pdfIn PDF document text
    • https://mixuvuweti.weebly.com/uploads/1/3/1/4/131483588/mabividolapoj_tovuliviwuzesod_pifizu.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/gomeluritigubu.pdfIn PDF document text
    • https://nufawufaza.weebly.com/uploads/1/3/0/7/130740177/3278422.pdfIn PDF document text
    • https://cdn.sqhk.co/pevukoza/iYhjxta/mother_earth_brewery_kinston_north_carolina.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/Zibevib/82523724706.pdfIn PDF document text
    • https://kovepezerolozu.weebly.com/uploads/1/3/1/4/131483153/1161105.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/5310801.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B7 5244 bytes
SHA-256: 93ac823c0b8975534807415430ecc24b58470d5ec6bd84e407105b6f4fa33d6d
font_01_sfnt_off00010363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10363 10612 bytes
SHA-256: 795080e794b9be8c9c52c4b55849026bd7539cc864f18e01e6cfa54813463702

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