Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb882142b34788bd…

MALICIOUS

PDF

71.2 KB Created: 2021-02-26 19:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: da62291ba3beeb589e8f7598d5787e2d SHA-1: c067c03d05c0b5f242ccaa3b225fde00a9b945f4 SHA-256: eb882142b34788bd8a3d5b0d0228fcb7440a9066ade781e78d155c8cda1e8ec5
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=similes+worksheet+for+grade+7 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4487424/normal_6006503d2fb9d.pdfIn PDF document text
    • https://rapalavosifezo.weebly.com/uploads/1/3/4/8/134886177/sumilufoxo.pdfIn PDF document text
    • http://cardioactiveuficiale.site/juwufatix2mfp.pdfIn PDF document text
    • http://bilet-pdd.site/31477719891zf88u.pdfIn PDF document text
    • http://arevakar-travel.com/ssf2_1.2_unblocked6xf0o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474759/normal_60008397842c7.pdfIn PDF document text
    • http://forecast.bet/wipro_demerger_scheme8jula.pdfIn PDF document text
    • https://xuzomavarek.weebly.com/uploads/1/3/1/3/131383242/pewepiwin_mizixo_wotusoj.pdfIn PDF document text
    • http://1xbet-football.fun/kezevolokogalameliihbuy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424981/normal_602ed54bdd207.pdfIn PDF document text
    • http://predouche.xyz/46500106833gz9hb.pdfIn PDF document text
    • http://swiss-gear-top.xyz/12103392067l7n7f.pdfIn PDF document text
    • http://4gusevshop.website/how_to_cook_rice_in_philips_multi_cooker9d1ii.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/o_positivo_pode_doar_para_quem.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/can_birds_eat_papaya.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F1 5660 bytes
SHA-256: 44f631c35e5f5452486622a5682c9d0dc359f603c8bd18d246152ab672b44236
font_01_sfnt_off0000eb24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB24 11320 bytes
SHA-256: c21e19a7d28c18fcdce084b3d4774a992e06b7c80e8525df0c88133b854a98f9