Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0dc52f8af74ffcd…

MALICIOUS

PDF

70.8 KB Created: 2021-03-02 08:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 096dc14831633d4c975a7d70f58a593e SHA-1: 581ea4eb0e745847839d9fff5d20113e36de9972 SHA-256: f0dc52f8af74ffcd949d4b094c5c6d00c4781da4668c726cfbe9f21b6809b259
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wix?keyword=welsh+onion+crossword PDF link annotation
    • https://wuwotozon.weebly.com/uploads/1/3/4/3/134315251/313dc.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/marieb_anatomy_and_physiology_10th_edition.pdfIn PDF document text
    • https://mufejuraziga.weebly.com/uploads/1/3/0/8/130814984/wajili.pdfIn PDF document text
    • https://dasukixarukawo.weebly.com/uploads/1/3/2/8/132814138/8041280.pdfIn PDF document text
    • https://wexemexaxixu.weebly.com/uploads/1/3/4/7/134709907/lisen-diditod-jaruj.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/gizijiwubobako.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416512/normal_5fe47436ecfd7.pdfIn PDF document text
    • https://voranafirodibug.weebly.com/uploads/1/3/2/6/132696030/xawisideb.pdfIn PDF document text
    • https://wapifonobuj.weebly.com/uploads/1/3/4/7/134744781/3455796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_602f3495a4644.pdfIn PDF document text
    • http://moxolesapudeli.22web.org/kovova.pdfIn PDF document text
    • https://nafogoke.weebly.com/uploads/1/3/4/7/134776139/genawubewuzogidosi.pdfIn PDF document text
    • https://xudisuwovoj.weebly.com/uploads/1/3/5/4/135400752/narirew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wejifofodig.rf.gd/chima_chima_song.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/14812605845.pdfIn PDF document text
    • http://luxupuxud.myartsonline.com/gowesujativunoguwek.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/72501519500.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_off0000dadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADC 4920 bytes
SHA-256: a5803b75ce1d3482c284c9d12fa0a6464986152d48e5dc3f205bcb13f91b5652
font_01_sfnt_off0000ebab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAB 10092 bytes
SHA-256: 3ff29ddc7f64508566ca515dee8501a2df17e5f6a94c37b4b7bfc073eea3e2ee

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