Malicious PDF — malware analysis report

Static analysis result for SHA-256 c28a50576b0a6b63…

MALICIOUS

PDF

73.0 KB Created: 2021-02-21 12:57:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a67c06c9d1448bf80eebb3670d6e45f0 SHA-1: 62f4e0b012d9c7376d3fc0a94e8a93fc09f5d120 SHA-256: c28a50576b0a6b6340fd4b5391ed2388217ecfd501243f2624cb4077ca7e1700
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=how+to+write+a+brief+news+article In PDF document text
    • http://prodson.fun/dodge_charger_srt8_2013_manualano52.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/fV56qrB/mhw_builder_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408464/normal_602de0d132db5.pdfIn PDF document text
    • http://prognoz-football.club/carranza_s_clinical_periodontology_12th_edition_download685z8.pdfIn PDF document text
    • https://bijejosuti.weebly.com/uploads/1/3/1/6/131637047/53599c11c08.pdfIn PDF document text
    • https://cdn.sqhk.co/ribegibonot/LhfmAXt/halloween_party_invitation_maker.pdfIn PDF document text
    • https://letavozogat.weebly.com/uploads/1/3/5/9/135978758/329a1.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/cQeqnef/vureviwoteb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494648/normal_5ffae9d8ce114.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_5fe770d477e31.pdfIn PDF document text
    • https://cdn.sqhk.co/bafiweba/XChghgc/free_games_new_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462368/normal_5ffa9625045b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wigazimo.epizy.com/45962399853.pdfIn PDF document text
    • http://sebubexegan.rf.gd/31305892003.pdfIn PDF document text
    • http://kubatejabudebuj.rf.gd/vefinozivaga.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_off0000e24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24F 5068 bytes
SHA-256: ffe26504846572e69b2cc2eb318fb7ddd23612236d008b1fa89339764f2a1a87
font_01_sfnt_off0000f3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AB 10300 bytes
SHA-256: fa60d1519722ab10c9ad003e5fb6f5f6e7b6ce541fae57c6cc06d6d210fd15c9

Open this report in the interactive analyzer, or submit your own file for analysis.