Malicious PDF — malware analysis report

Static analysis result for SHA-256 073bfc8022c2fda4…

MALICIOUS

PDF

71.6 KB Created: 2021-01-31 11:34:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 446658b966b5277241dab1e1cc7b118e SHA-1: 4f6e3d19c254a9b92fe47111ff5d61f874725611 SHA-256: 073bfc8022c2fda47118c2e49c717a293e7e986cdb1e09ccd630a892b664fb9a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://bologen.ru/aws?utm_term=guided+discovery+learning+method PDF link annotation
    • http://runolive.com/feisty_pronounce_meaning_in_urdu0olnw.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/hjjgBnT/94526978645.pdfIn PDF document text
    • https://fekamudubop.weebly.com/uploads/1/3/5/3/135325245/fagesifa-nezegafaniludo.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/DdjjEu7/one_page_per_day_printable_calendar.pdfIn PDF document text
    • https://cdn.sqhk.co/telivagawu/clqieic/xomasefawarikuvifiruzo.pdfIn PDF document text
    • http://pomirkapa.site/hd_mini_cam_app_for_macbr905.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/gejgjdI/34616334566.pdfIn PDF document text
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/1289793.pdfIn PDF document text
    • https://sorudexene.weebly.com/uploads/1/3/1/3/131384015/6ad0014c06f99.pdfIn PDF document text
    • https://lanuwoga.weebly.com/uploads/1/3/1/6/131637333/jupufe-navigibaz.pdfIn PDF document text
    • http://pifozuvarivin.22web.org/36522448121.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/YhfBdpF/street_chaser_game_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/fakomuse/iebifKJ/85349313762.pdfIn PDF document text
    • https://direwuberegenis.weebly.com/uploads/1/3/4/3/134361890/nogakusutipom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumigojozupe.epizy.com/zazadeku.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_off0000d985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD985 5544 bytes
SHA-256: 6697c0b837c6ba20c4977563eb39d0d0666f6e1792f4b548031022e728cc92aa
font_01_sfnt_off0000ec4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4A 11096 bytes
SHA-256: 1dd63da66194cc932390d82ef12103e339c8669e06a3ae672a30f4947090e968