Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed8dcf1cb35debd…

MALICIOUS

PDF

104.7 KB Created: 2021-02-19 06:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 75aeb34501278aa39f11021ca4cff9d5 SHA-1: 40d6b71525d3475cfb85496f004c6b109a3cea61 SHA-256: 7ed8dcf1cb35debd5cc1a45ead367d4b95f4bbbdf477b63d89af0bb28089f9e7
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://seumenha.ru/strik?utm_term=how+to+rebuild+350+small+block PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494432/normal_5ffed41542109.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468531/normal_602c1187930d0.pdfIn PDF document text
    • http://probkin34.xyz/math_problems_with_answersyy4up.pdfIn PDF document text
    • https://gonuvogizup.weebly.com/uploads/1/3/1/8/131857562/0e9ce0484.pdfIn PDF document text
    • http://homearfes.com/nunajiligifuul2n7.pdfIn PDF document text
    • https://jazelisis.weebly.com/uploads/1/3/4/8/134870131/6018842.pdfIn PDF document text
    • http://busurman.space/93472630306gp0pa.pdfIn PDF document text
    • https://jexiliwole.weebly.com/uploads/1/3/0/7/130739190/jefijitalim-razev-zirajud.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/software_estimation_demystifying_the_black_art_free_downloadf3enx.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/90057730685doo5y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384152/normal_5fe9a110331b6.pdfIn PDF document text
    • http://idealicait.site/diy_mask_easy_patternz6ls3.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/jobavo/awas_yojana_form_gujarat.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/squirrel_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/earned_income_tax_credit_2018_guidelines.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_off00015bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BFB 5772 bytes
SHA-256: 30c0c4d9fc0086402754778f751569d6089819775dd0904f58014db8c706ef1f
font_01_sfnt_off00016f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F97 11264 bytes
SHA-256: b12ff7e9602b367163427e34c5d43d8a110bdb47121408ae19127a5e847189fc