Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ba01ab5969f343…

MALICIOUS

PDF

78.2 KB Created: 2021-02-17 22:17:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 84ff872b41df8bcb0d833dcde3dd646e SHA-1: 5010d1546879c5c262403015ff65b0278fc77cc5 SHA-256: 97ba01ab5969f343add7f1d9e87d4943cffce4f4159f52a07a48daec564cc3c7
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF file exhibits characteristics of a phishing or malware distribution lure. It contains numerous external links, many pointing to disposable domains, suggesting a link farm designed to host malicious content or redirect users. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick users into downloading files. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/wix?keyword=raid+shadow+legends+mod+apk+1.15.2 PDF link annotation
    • http://foyou.store/microsoft_word_golf_tournament_flyer_templatea12h1.pdfIn PDF document text
    • https://belexikezetuvom.weebly.com/uploads/1/3/0/7/130775063/353442.pdfIn PDF document text
    • http://santand-es.com/vufulej7jh4.pdfIn PDF document text
    • http://big-ita.space/907582419768qopi.pdfIn PDF document text
    • https://budigalaxob.weebly.com/uploads/1/3/5/3/135313384/36f98.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/J3hjPif/karen_talk_to_the_manager_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/bjbBhib/84366342255.pdfIn PDF document text
    • https://cdn.sqhk.co/piwizogir/uXjcfLJ/tiles_near_me_open_now.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/Jy2bege/80808572110.pdfIn PDF document text
    • http://guferesuzas.22web.org/education_portal_e_kyc_report.pdfIn PDF document text
    • https://vuxutuwatojo.weebly.com/uploads/1/3/4/6/134625262/taxod_wijuvem.pdfIn PDF document text
    • http://zixonolugajona.iblogger.org/lasizuzejumo.pdfIn PDF document text
    • http://profer-opt.ru/64655733486072n2.pdfIn PDF document text
    • https://cdn.sqhk.co/jojewezalika/ehjiegB/gazuzogolasufifanevuvanon.pdfIn PDF document text
    • https://bitabado.weebly.com/uploads/1/3/1/4/131436956/sukonokapapi-sojatavovute.pdfIn PDF document text
    • https://jipuzalo.weebly.com/uploads/1/3/4/6/134693454/acb311e.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/kewuxejikiwe/9628066984.pdfIn PDF document text
    • http://viwuleraxukopiz.epizy.com/30593578814.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/rojegevetoxedofajo.pdfIn PDF document text
    • http://juwelaloz.epizy.com/60908927283.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/vmware_partner_portal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD40 5780 bytes
SHA-256: 380f7c07bad635cb2a60af53a8681af642460d57fb7f0f9a23e55f3ea2eef018
font_01_sfnt_off0000f0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F0 10800 bytes
SHA-256: 0addb3cead3dc67eccbbc8fe26c40beddc62b52a6359700fd23363f2e7ef6440
font_02_sfnt_off0001162d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1162D 16144 bytes
SHA-256: 85fbc13212128db6e40bc90e4e1f9bbbcadb806fa5e20bafa33b5741156b3073

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