Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0654e3283b1c1e…

MALICIOUS

PDF

77.7 KB Created: 2021-03-22 16:44:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 15fda2ddeaa357f9ac7d537a22a0f5c5 SHA-1: 5ce3a501d62ac7b157cc4be76975d92975d46b49 SHA-256: 0d0654e3283b1c1e07dd5f02cba58077f7e20fbc9250b63124a97feaf2cc7151
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF is identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. It contains numerous external links, with one pointing to maypoin.ru, suggesting a phishing or SEO manipulation scheme. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be instructing users to open a password-protected archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • 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://maypoin.ru/award?keyword=logiciel+pour+fusionner+pdf+gratuit PDF link annotation
    • http://stc-l.ru/15998667529nebmi.pdfIn PDF document text
    • https://zageporipemaza.weebly.com/uploads/1/3/4/5/134507549/252547.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/giygZgc/sport_racing_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzalolotagi/NxHiegn/movie_poster_wallpaper_1920x1080.pdfIn PDF document text
    • https://cdn.sqhk.co/lemisobe/hdidWgj/lorumo.pdfIn PDF document text
    • http://tryplafond.xyz/pogusasapujivixuzabultknj.pdfIn PDF document text
    • http://myfavoritesun.xyz/dd_5th_edition_free_adventures9op3h.pdfIn PDF document text
    • https://xejukosaxup.weebly.com/uploads/1/3/1/4/131437924/179ed6f.pdfIn PDF document text
    • http://bhd-management.space/bisotafurodumufajamw76q.pdfIn PDF document text
    • https://povuwifapijolak.weebly.com/uploads/1/3/4/2/134265363/vunazutiner-vogoruniwukig-tisemovasimuxi.pdfIn PDF document text
    • http://igafnd.org/kopovjx2a2.pdfIn PDF document text
    • https://tipuzivi.weebly.com/uploads/1/3/0/9/130969377/1975772.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://72dfff08-f6cb-4f5d-aaac-ebe71175d6a6.filesusr.com/ugd/c268f7_8eafb92a8b3d4938bd75cf2a183766b8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/69bd709d-0c29-41fe-be87-21ff3fd98c4e/2019_ford_mustang_gt350r_horsepower.pdfIn PDF document text
    • https://c6926203-1eb9-401e-9afa-11f61f201807.filesusr.com/ugd/685707_1068037e1ee2418f80346af8aa2e2327.pdf?index=trueIn PDF document text
    • https://8a89c5bc-485b-4808-980c-66c60e8d9908.filesusr.com/ugd/834936_7ca3b84ba1844a8fad7cbd64a9974544.pdf?index=trueIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_317aca25ae454d88ac37ba1ac2c6c390.pdf?index=trueIn PDF document text
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_6ea76dd4d4204b55861bd31312d692e3.pdf?index=trueIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_82d353b1d0504af99d198ff1b9873fba.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/521ba2dd-f47c-4fa1-863b-dcd165c48987/fifty_shades_darker_online_reading.pdfIn PDF document text
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_54b99264df8b42e08f5b83b7510381cb.pdf?index=trueIn PDF document text
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_dd436d8d15dd48088b379a767fe41da0.pdf?index=trueIn 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_off0000f082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF082 5264 bytes
SHA-256: 4df03b3287323428862da57a996c1aa78f1ab5abd0fc3792154130a13645e9b8
font_01_sfnt_off00010280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10280 12160 bytes
SHA-256: c1382c0b86cdc15c3fd4aef61ac4f961162c6619e028dd24b803a0ff64c8bc15