Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd4a77f175f2cce7…

MALICIOUS

PDF

85.9 KB Created: 2021-02-22 10:55:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1fdb5b2256e0d5c9c39980fee0b0ae38 SHA-1: 1e3d0efe497047671c4d85f119c37ced0db3b568 SHA-256: fd4a77f175f2cce7edd8a765a266c0e06a51a40d6729321242f3f41243051286
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://maypoin.ru/123?utm_term=why+does+rna+contains+uracil+and+not+thymine PDF link annotation
    • http://wbigs.space/critical_ops_apk_mod_2019s9eci.pdfIn PDF document text
    • http://bigops.fun/27524819630qy9wf.pdfIn PDF document text
    • http://wavasesinile.22web.org/wixubutavubugir.pdfIn PDF document text
    • https://zipenuwoku.weebly.com/uploads/1/3/1/0/131071258/gonarunaxabawegifi.pdfIn PDF document text
    • http://zoompol.xyz/gerazumubiganuflyvpv.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/photo_editor_pixlr_free_online09s7s.pdfIn PDF document text
    • http://wonder-ita.fun/1365988818368185.pdfIn PDF document text
    • https://sowumubisi.weebly.com/uploads/1/3/2/8/132815199/daxanilosefabaku.pdfIn PDF document text
    • https://vedirivokezijil.weebly.com/uploads/1/3/4/1/134108565/zadejiwirek.pdfIn PDF document text
    • http://newyearshop.site/323037104234d31b.pdfIn PDF document text
    • http://jugatilewe.22web.org/werewolf_online_beta_apk.pdfIn PDF document text
    • http://watomidipokaki.22web.org/brooks_brothers_performance_polo_original_fit.pdfIn PDF document text
    • http://zdsshop.top/yamaha_fascino_imagesxlvw1.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/xijalovelokolep/absorption_costing_statement_format.pdfIn PDF document text
    • http://kosepeb.rf.gd/wheat_free_yeast_bread_recipes.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_off000110d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D1 5292 bytes
SHA-256: c258e0fe272495489c7c02ba04ddfb1e27269ecedfd597e28e01cb60be8aad3b
font_01_sfnt_off000122b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122B8 12072 bytes
SHA-256: 76966981bfe6c78e2731498eb36b2775ca4f3a45aea0141329a659b472b3d626