Malicious PDF — malware analysis report

Static analysis result for SHA-256 11f1958db031e695…

MALICIOUS

PDF

68.8 KB Created: 2021-02-18 03:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 90031b39470f9eac3df5317ea34e6c26 SHA-1: 85de18b095547efbc6761bcfaf9ea3070d5c5bfc SHA-256: 11f1958db031e695842ae72111f12add206be541a33df50ae42299954b20b715
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/wix?keyword=normal+force+worksheet+answers PDF link annotation
    • https://deluwibenarut.weebly.com/uploads/1/3/1/3/131382693/3672159.pdfIn PDF document text
    • http://energierecrute-emplois.com/42765384593fxb7b.pdfIn PDF document text
    • https://xezixopizanew.weebly.com/uploads/1/3/5/3/135314636/8305176.pdfIn PDF document text
    • https://xidokuwu.weebly.com/uploads/1/3/1/4/131453793/60c581133f5f42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385848/normal_5fdf725548110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415782/normal_602591c8901f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_600e6db630815.pdfIn PDF document text
    • http://fortuneo-enligne.com/using_commas_worksheet_grade_5y3xgs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479925/normal_5fdefd79ebfeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379034/normal_6007d249447e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457311/normal_5ff9308a175bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456671/normal_6001007ce82b2.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/govopurumolawu.pdfIn PDF document text
    • https://jipuziloki.weebly.com/uploads/1/3/2/6/132695969/c125208fb1bc0e5.pdfIn PDF document text
    • https://rajilogibakew.weebly.com/uploads/1/3/5/3/135326989/3875675.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/zodawanuror/jotuzokutozazuf.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_off0000d1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A6 5248 bytes
SHA-256: 649914d3152bb0ed367fdb4507f3fe38102f313e328776a00f996c0438f338b6
font_01_sfnt_off0000e368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE368 10164 bytes
SHA-256: 97e2478ab7cbd0e4375bf9f45ecba28df0f4061e933ab3cefa23d611e68b8691