Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5979dbb64bb8451…

MALICIOUS

PDF

70.9 KB Created: 2021-02-28 10:09:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 85d3769c43403a3fef67b07c02800dcd SHA-1: 9831118e337675aa4e798ce8f1dedf2bc26ad489 SHA-256: d5979dbb64bb84512e758b83da991a9bf35fe4ee70fbc1a5479fd5105db22bf9
186 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
  • 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://soxebez.ru/award?keyword=pet+rocks+ideas PDF link annotation
    • https://cdn.sqhk.co/pixafosabow/Orgj2ii/red_alert_3_uprising_wikipedia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422137/normal_6003adb959dd5.pdfIn PDF document text
    • https://jizufuvarax.weebly.com/uploads/1/3/1/1/131164460/rikopujefoxerateb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446491/normal_5fe5b5c2e558d.pdfIn PDF document text
    • https://totobulamu.weebly.com/uploads/1/3/4/3/134310137/wiximanaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493610/normal_6016a5d6155fa.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/fhgixbU/14327373972.pdfIn PDF document text
    • https://cdn.sqhk.co/gopilufifeda/ihd5txK/talking_tom_gold_run_download_apk.pdfIn PDF document text
    • https://fibusoza.weebly.com/uploads/1/3/0/7/130775704/novofo.pdfIn PDF document text
    • https://rabuwamefikulo.weebly.com/uploads/1/3/1/3/131398373/wekopu.pdfIn PDF document text
    • https://cdn.sqhk.co/lafugafeniki/JRhhhbB/fun_descriptive_words_that_start_with_someone.pdfIn PDF document text
    • https://tajixuxax.weebly.com/uploads/1/3/4/7/134751877/dofasuke_tunomigujafix_patusamibi.pdfIn PDF document text
    • https://dixamagajo.weebly.com/uploads/1/3/4/6/134652312/varizebatiwaliwixew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369651/normal_5fcf0c1844fae.pdfIn PDF document text
    • https://cdn.sqhk.co/gepumenujeme/idgiTGW/avion_rc_warbird_rtf.pdfIn PDF document text
    • https://jugujepatuw.weebly.com/uploads/1/3/4/9/134900825/peromonoduwuji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/45691028756.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_off0000da10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA10 4968 bytes
SHA-256: 88bdbef00ae753d1fc64fe03fa63364b7b243e1ad8bf43bfbecaa1d5754552f8
font_01_sfnt_off0000eb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB00 10372 bytes
SHA-256: c1271ee944b767f1205841cd6740247f1bcf7158bbaed478c9c13cdabdd39f38