Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9259abc4e2c4e16…

MALICIOUS

PDF

74.9 KB Created: 2021-03-03 13:50:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cb4d203d16bc6985c4b2f18e2eb51abe SHA-1: 4d9d09c3c92d36bc8b0920e81254276745c162d4 SHA-256: a9259abc4e2c4e162f8e18f0b2182a3ada34f090793ba7412fd1ffb424f5b077
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=how+to+check+sc+driver+license+status PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4503525/normal_5ffdfccf293dc.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/65975263215.pdfIn PDF document text
    • http://debesur.iblogger.org/best_online_sat_practice.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/ifiewje/babizamomazoli.pdfIn PDF document text
    • https://pepedojimu.weebly.com/uploads/1/3/1/0/131069997/mulemugidiv-kipomuj-fonikogel-mawezuteporav.pdfIn PDF document text
    • http://zajowidased.iblogger.org/path_of_exile_immortal_syndicate_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/gagowuname/dgghc9T/block_story_download_free_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460477/normal_602ba4e3aa92c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412774/normal_5ff9a4c276942.pdfIn PDF document text
    • https://guxitubekin.weebly.com/uploads/1/3/4/2/134267073/riwez-nojogusijube-kefobelimog-ripufixip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nemagigorame.epizy.com/workkeys_scores_gold.pdfIn PDF document text
    • http://sosukaf.epizy.com/nalugesewiwikefepiz.pdfIn PDF document text
    • http://goxebobepi.epizy.com/64837394317.pdfIn PDF document text
    • http://favukimasinete.rf.gd/inventory_list_template_printable.pdfIn PDF document text
    • http://wewonak.rf.gd/1992427617.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_off0000e754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE754 5204 bytes
SHA-256: 067136b4607a69590a1eb8592c7c70fd0c74e98051d6ab1dae808cf1422d3e38
font_01_sfnt_off0000f917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF917 11080 bytes
SHA-256: a565a422c3de64bde6ffbd8e2c873959cb0408495eaf302759123e7bc576c298