Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5787051b83782af…

MALICIOUS

PDF

91.6 KB Created: 2021-03-22 19:37:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4ed3d1a57d59cce842fb0cf63f467d82 SHA-1: 5b5c230c3bba76f5ab4c2233fea96838407a11e1 SHA-256: e5787051b83782af963dbe94cfd50893f4aa05f27209c6c38eb51b8f28e91a8f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://crophysi.ru/strik?utm_term=what+to+do+with+apple+tv+3rd+generation PDF link annotation
    • https://mosaminaworite.weebly.com/uploads/1/3/1/6/131636744/kemasokepok.pdfIn PDF document text
    • http://pl50off.info/negogugewipipafomiwiveloc3s7u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_6050d0782ce9f.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/c50370e487da20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419826/normal_5ff04051dbecb.pdfIn PDF document text
    • https://xekafifem.weebly.com/uploads/1/3/4/6/134669887/0ae5b.pdfIn PDF document text
    • https://raxorevowipafe.weebly.com/uploads/1/3/4/7/134765671/7577131.pdfIn PDF document text
    • https://mugejonisisekof.weebly.com/uploads/1/3/1/4/131437633/jotubapitubukaf.pdfIn PDF document text
    • http://hargotel.xyz/how_to_drive_manual_instructionszttio.pdfIn PDF document text
    • https://gopoxigubujazu.weebly.com/uploads/1/3/0/9/130969754/816720.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495395/normal_6001ec1d1975a.pdfIn PDF document text
    • http://pankreatitum.ru/985848730303or44.pdfIn PDF document text
    • http://tokio-2020.fun/yo_robot_pelicula_completa_en_espao119u1.pdfIn PDF document text
    • https://suranekiwexem.weebly.com/uploads/1/3/4/6/134698667/remupivibuxeva.pdfIn PDF document text
    • https://lorobewan.weebly.com/uploads/1/3/1/8/131871486/melapaworezojumakup.pdfIn PDF document text
    • http://trynon.xyz/chameleon_launcher_pro_apkfium4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nekogepi.epizy.com/epi_info_7_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4da91acc-9d1a-4ad4-9c02-11b51582c395/what_is_the_tradition_of_christianity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5579db-f108-4aa9-9aa4-c4316cebabe2/star_trek_voyager_episode_doctor_alpha_quadrant.pdfIn PDF document text
    • http://woxenebifa.rf.gd/fulojidugipezemu.pdfIn PDF document text
    • http://xakodalomidu.rf.gd/baofeng_uv-5r_spare_battery.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000126cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CF 5372 bytes
SHA-256: 8116de12ae61632f11b40ca618900810efd82091e7f78692ae84a97755d22bec
font_01_sfnt_off00013931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13931 11636 bytes
SHA-256: 76abea22cd853a63ebadbc511de733aba479927df9493089e6fe60af5e32e7ef

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