Malicious PDF — malware analysis report

Static analysis result for SHA-256 930ea9c603ac4612…

MALICIOUS

PDF

70.7 KB Created: 2021-06-03 10:26:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 62ef4aa6e19190dffefc6c97e821555c SHA-1: 56b747a5319b810e5f87689e5080af7a2256e873 SHA-256: 930ea9c603ac46126395016360b86aee785cb1a87695a1fc788d08c524a03c63
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 0.9998

Heuristics 5

  • 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 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://laborke.ru/pbw?utm_term=yoga+mudras+with+pictures+pdf PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4449974/normal_60b441b35b413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456387/normal_603637dda2d4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_601f6fb17482f.pdfIn PDF document text
    • https://feliwisinawo.weebly.com/uploads/1/3/1/8/131856919/1374930.pdfIn PDF document text
    • https://takadoturig.weebly.com/uploads/1/3/4/1/134108809/4751419.pdfIn PDF document text
    • https://gomujivas.weebly.com/uploads/1/3/5/3/135321586/diguwulo_tefofukuwifelo_sasuge_wekitak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501645/normal_602a127c64644.pdfIn PDF document text
    • https://degovemidim.weebly.com/uploads/1/3/4/0/134017519/94d128f4f9199.pdfIn PDF document text
    • https://waxagenejefud.weebly.com/uploads/1/3/4/7/134712445/053a356b1aa92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464862/normal_605329f6db3fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463005/normal_602b96027aaa4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziludezubeju.pbworks.com/w/file/fetch/144459003/8799569108.pdfIn PDF document text
    • http://katafuzum.pbworks.com/w/file/fetch/144488430/dobadozasapirizok.pdfIn PDF document text
    • http://xuwuziz.pbworks.com/w/file/fetch/144512493/qual__o_melhor_horario_para_fazer_exercicios_fisicos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42eac67c-4886-4d47-ab3f-8b8ba9ec9919/emil_and_the_detectives_national_theatre.pdfIn PDF document text
    • http://kuzimotum.pbworks.com/f/zaxurevogime.pdfIn PDF document text
    • http://pefagisunel.pbworks.com/w/file/fetch/144490236/grade_7_maths_textbook.pdfIn PDF document text
    • http://zorisomofi.pbworks.com/f/85466266229.pdfIn PDF document text
    • http://pibadaro.pbworks.com/w/file/fetch/144505185/18690425422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801de748-5c27-46b7-b249-ce399b971419/marantec_garage_door_opener_app.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_off0000d6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F9 5588 bytes
SHA-256: fc3d02529f7f67149c491c38b18f3186176e9f59b8e2783dce5b5570c32cca2b
font_01_sfnt_off0000e9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EC 10468 bytes
SHA-256: 4e8175191a418504a40e26c3ad6ef82021d888593861f374f35be2583c3bb4d5

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