Malicious PDF — malware analysis report

Static analysis result for SHA-256 12be682360a89195…

MALICIOUS

PDF

79.3 KB Created: 2021-06-07 17:39:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dc29da158ed565caad1eb41fcd11825e SHA-1: b15cc776100300f7c1c71390d35060646bfd2057 SHA-256: 12be682360a8919567fb4d78b45054a499ccf710f42fa92c87f47bcd1d88a9c3
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a phishing lure, specifically a fake movie download. It contains a mass external link farm, with multiple URLs pointing to disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The presence of a 'download button' lure and a 'password-protected archive' hint further supports a malicious intent to trick users into downloading and potentially decrypting malware. The ClamAV detection and ML classifier also strongly indicate maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://synerhu.ru/pbw?utm_term=arrival+full+movie+download+in+hindi+480p+9xmovies PDF link annotation
    • https://sevipopiwipuf.weebly.com/uploads/1/3/5/3/135302768/e6ce6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414498/normal_5fcd300b25f4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393641/normal_5fd6523c922ea.pdfIn PDF document text
    • https://waluxine.weebly.com/uploads/1/3/4/7/134759732/fetefize_gelofe_jowiwatufi.pdfIn PDF document text
    • https://zolezuborejizo.weebly.com/uploads/1/3/4/4/134444688/fuximafonekolax_zonotu_suxekupo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373511/normal_60049606ed012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_60694af58acef.pdfIn PDF document text
    • https://kafaxidaduxeb.weebly.com/uploads/1/3/1/4/131438036/4682675.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/7719921.pdfIn PDF document text
    • https://rezomiwutamanap.weebly.com/uploads/1/3/4/3/134362688/soxib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379970/normal_5ff70d7f6067c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vawijoj.pbworks.com/w/file/fetch/144660354/88472548527.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd87d2a1-e758-44df-ba3a-4d8d2f9c48fb/probabilidad_y_estadistica_descriptiva_unidad_1_distribuciones_de_frecuencia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15c91dbd-3d10-4982-8870-30a58b97aad6/duwisikonosurepuwupira.pdfIn PDF document text
    • http://fujiserefi.pbworks.com/f/sefejapadokutesineduteke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f2ee98-1667-4143-b90c-54dde750bda2/how_to_relax_if_you_have_anxiety.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/688156b5-7cff-46e2-91a5-183fdd91c97d/marbury_v_madison_summary_of_facts.pdfIn PDF document text
    • http://ridelox.pbworks.com/w/file/fetch/144449631/40803781215.pdfIn PDF document text
    • http://sonubugu.pbworks.com/w/file/fetch/144644640/hate_story_3_full_movie_720p.pdfIn PDF document text
    • http://bupataved.pbworks.com/f/9813043967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c48c4152-e48f-4a31-9f89-251d38af3c4b/napado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36da9d36-3528-4f85-89cc-405ef1ebb823/mizonokubinabuwijudibujik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8b3b62e-2cb0-4914-a4cf-909d8cc27b58/vaborabugasiwune.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_off0000f687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF687 6072 bytes
SHA-256: caa3c7a420147c6c6c6f9ac1693d6f5eb9f3aae84f425a0a98b25f11b2f3291e
font_01_sfnt_off00010b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B24 10660 bytes
SHA-256: 023886bfdd349b7be9bb2d871fb43fbe07fcd35dbd629abca5fb43da40338170