Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e823141f7f0c35…

MALICIOUS

PDF

71.5 KB Created: 2021-02-28 20:56:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d001c42331c8916fa90c34888235d140 SHA-1: 81e4e7a00721be37a85ed017f7f9330840ada669 SHA-256: d1e823141f7f0c3514e930455ba8ec9b92d6d7bda515d328e138edd5d2345c4a
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://jacksth.ru/award?keyword=sap+for+dummies+free PDF link annotation
    • https://cdn.sqhk.co/fabozesemi/hcjhkjj/wugararutarefesasusamuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457000/normal_6034fb00d5209.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/gfwhQge/bolagujidotobuxaramovo.pdfIn PDF document text
    • https://tijotado.weebly.com/uploads/1/3/1/3/131382447/dirunawobivif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369915/normal_6018bd0db2850.pdfIn PDF document text
    • https://wuvumivew.weebly.com/uploads/1/3/1/4/131410662/vulasivusoruduliforo.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/z3ihvZy/6161369998.pdfIn PDF document text
    • http://blacklaser.ru/creep_chordsaypxh.pdfIn PDF document text
    • http://sait-ok.ru/coldwater_lake_mi_fishing_reportsucmes.pdfIn PDF document text
    • https://pudijeda.weebly.com/uploads/1/3/4/5/134586696/bewapitatame-zebig-loragajesav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412774/normal_5fe7b1ad94355.pdfIn PDF document text
    • http://allerlo.xyz/98073284817kh3e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5ff96be4767b1.pdfIn PDF document text
    • http://morj.space/vedowipovesv6bss.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498702/normal_5ff5faa574810.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480408/normal_5fe08623578a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456999/normal_601181107d708.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/dikobepibelun/k7_antivirus_for_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/jasper_reports_java_11.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_off0000dcae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAE 5256 bytes
SHA-256: bc03ffdd5ed2dc9a3b251687bb164c47a64ac2eea21ff1019926584a3e6b46cc
font_01_sfnt_off0000ee7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7B 10136 bytes
SHA-256: b31f4721a715fdc4e241e09d42158858d00257ed3ddf93f7e171e4a39534eb80