Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ffb28a6328d187…

MALICIOUS

PDF

76.7 KB Created: 2021-02-28 04:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a390bc38bc63e3a47db54dd94a7a7ffd SHA-1: d9b050dba30d8c264e3ca4d921e1fe708f1aff12 SHA-256: 49ffb28a6328d1872b67d7c8806cab94faf3d62414be90c20f86a891f1900c77
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains text related to an 'Igt game king for sale' and references the wkhtmltopdf tool, suggesting a lure to a malicious URL. The presence of numerous external URIs, many hosted on disposable domains, further supports a phishing or scamming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/strik?utm_term=igt+game+king+for+sale PDF link annotation
    • http://vemasujananexu.22web.org/baofeng_radio_user_manual.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/sugafa.pdfIn PDF document text
    • https://cdn.sqhk.co/rawewosit/gea09jh/kovimesevurefozepoba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_602cf292f206a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381320/normal_5fe79b62d395f.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/ily4WTg/jobuserixorajebawofovox.pdfIn PDF document text
    • https://cdn.sqhk.co/vudemijugamu/jejedtr/the_legacy_of_a_whitetail_deer_hunter_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389106/normal_5fd9b135643b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406820/normal_601dd9fc43648.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470979/normal_5fcf1269141ab.pdfIn PDF document text
    • http://demejizato.22web.org/93529101721.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_60216c6f99568.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367674/normal_600441af21004.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suxanovovogemi.rf.gd/certificate_of_origin_form_e_sample.pdfIn PDF document text
    • http://darozux.epizy.com/lofawetifajojizolexokapa.pdfIn PDF document text
    • http://xalovizavana.rf.gd/mobile_website_template_size.pdfIn PDF document text
    • http://wanudoxemix.epizy.com/thanksgiving_comprehension_worksheets_for_first_grade.pdfIn PDF document text
    • http://palelezugob.onlinewebshop.net/bajulazisetimatujid.pdfIn PDF document text
    • http://jukikusikodopom.epizy.com/zosepinuw.pdfIn PDF document text
    • http://tivapatovike.epizy.com/55163852774.pdfIn PDF document text
    • http://suvalomimo.atwebpages.com/keurig_2.0_cleaning_parts.pdfIn PDF document text
    • http://guvenaverelud.epizy.com/13913139636.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_off0000ef71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF71 5088 bytes
SHA-256: 408293f027076f91026a269679eeb21787bf56757a0f87359f6ac0b9220f296a
font_01_sfnt_off000100b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B5 10736 bytes
SHA-256: 089645377e62f82f8cd6fca436f617a0705b140e45c8e4a89b13e704a8eb230b

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