Malicious PDF — malware analysis report

Static analysis result for SHA-256 b966e0558fd2b750…

MALICIOUS

PDF

71.9 KB Created: 2021-03-02 07:40:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7f58882c818a45e369290641ff7e5fef SHA-1: 75050fe31b11af980823cfe9dddcc3fb70ca009a SHA-256: b966e0558fd2b7502fae804e3d808dff4928283a4034999bfab0f5faffc69c1a
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to external sites, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by identifying the PDF as a link farm on disposable hosting, likely to obscure the true destination or evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://botokaw.ru/strik?utm_term=how+much+is+a+sonic+blast+cost PDF link annotation
    • http://lesantyqas.online/63458366564qddc2.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/3bvGeBa/85465410322.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/jogexexezoniv20v4r.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/ia2hbjd/83814728102.pdfIn PDF document text
    • http://gaydating.world/gikarikifewotilevilalibe3whdq.pdfIn PDF document text
    • http://kellys.space/33949790631c90p3.pdfIn PDF document text
    • http://gravkamen.ru/avast_antivirus_pro_2019_apknyrc6.pdfIn PDF document text
    • https://cdn.sqhk.co/geroterunetu/c6jhMtd/ps_eden_space_tomcat_full.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/ic81dYe/mujurolivovopigubanavarax.pdfIn PDF document text
    • http://romeital.space/rogativamilokaxodax7zqnk.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/peter_drucker_managing_oneself.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/ihhcjaB/auto_click_iphone_2020.pdfIn PDF document text
    • http://aduo5.online/147776899593593m.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/gcifiaz/58408030684.pdfIn PDF document text
    • http://uanews.website/active_viewing_guide_questions_iron_jawed_angels_worksheet_answers59kiv.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/how_does_the_bulletproof_diet_work.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gipebevu.atwebpages.com/pukozopedema.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_off0000dcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC3 5136 bytes
SHA-256: 19a1d840d400eef66c8cdf48be6f483bbca66076bf6b49c343cf963cb45de9ce
font_01_sfnt_off0000ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE26 10696 bytes
SHA-256: 073a1ebf846b190a0f5a12f54dd31a06e1af3a7bbc828ca603f5fe2102241dcf

Open this report in the interactive analyzer, or submit your own file for analysis.