Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d4af646d75ee03…

MALICIOUS

PDF

83.5 KB Created: 2021-04-20 15:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 668b8f7ae7c6cf60af84e5c3f61ea1e6 SHA-1: c04236a6c3973df4f8fbe8f9c8724408856baff0 SHA-256: 60d4af646d75ee03c7fa6e076a4b77f5fc479e94d732c231dbf8503259452bff
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/strik?utm_term=difference+between+leader+and+boss+video PDF link annotation
    • https://cdn.sqhk.co/wajuletixex/Jicmgg1/62779901795.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/35555402563.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/weraris.pdfIn PDF document text
    • http://zawopim.mygamesonline.org/myanmar_grade_10_chemistry_textbook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417422/normal_5fcf2c108a6ed.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/dZbHhfw/14472773100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390323/normal_6058b8c2ea91c.pdfIn PDF document text
    • http://xagidodovinudu.iblogger.org/qsc_touchmix_16_multitrack_recording.pdfIn PDF document text
    • http://beweroxaku.66ghz.com/kuvopapurevi.pdfIn PDF document text
    • http://vowuzemiru.medianewsonline.com/scrabble_dictionary_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/aXIrify/clean_my_lungs_device.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419826/normal_5fef7bb22f561.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cb0920a4-0dfc-4587-8161-bd3bf883b043.filesusr.com/ugd/df391a_89dafac8e83a445d8126dd8bcbcb339a.pdf?index=trueIn PDF document text
    • https://2daccc73-8708-4113-a26a-4f38906335d9.filesusr.com/ugd/f65175_52ebdecff4bf4bf48fd1f1418ebf806e.pdf?index=trueIn PDF document text
    • https://d90bda3b-35dd-409f-9d4b-b4a00d881a52.filesusr.com/ugd/b88e3d_c6292dc5ff4748579391acef1aebf224.pdf?index=trueIn PDF document text
    • https://94ac7338-8c66-48ed-b7e4-01cccba3eff0.filesusr.com/ugd/9b8421_d0012c5a33a1401cb78d8388be23b288.pdf?index=trueIn PDF document text
    • http://wuwedilejom.myartsonline.com/personal_branding.pdfIn PDF document text
    • https://cc6d8859-fc08-4100-a073-55b48c5addfc.filesusr.com/ugd/238140_84e607aaf63142ac87caaccb6b01ab61.pdf?index=trueIn PDF document text
    • https://c93e3e17-565c-496b-95a0-45fea83b015f.filesusr.com/ugd/cd9bb8_d3bc8ce854f3466a826c9dc286c02b7a.pdf?index=trueIn PDF document text
    • http://donijexufenu.onlinewebshop.net/libro_nueva_evidencia_que_demanda_un_veredicto_descargar_gratis.pdfIn PDF document text
    • https://fd7a53fe-11c1-4e60-83ad-ac1bb997268f.filesusr.com/ugd/5cf23b_3717f5f2139f4560a3f9c6ae94d38512.pdf?index=trueIn PDF document text
    • http://kimanaw.epizy.com/87630523892.pdfIn PDF document text
    • https://e432c3f7-acc0-403b-bc7f-1b8c16782643.filesusr.com/ugd/6a4899_fc26e511eb00465a94fdca812b8bc434.pdf?index=trueIn PDF document text
    • https://9ffa65b4-b95e-481c-977d-2cf6acaa57d7.filesusr.com/ugd/f68d46_68f223808d1849e3b8395fd1df86713c.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

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_off00010720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10720 5308 bytes
SHA-256: 7f5f9cafa4672573590670d8a4b1494e10242020f0eb63ff2ba1749f077c7a09
font_01_sfnt_off00011958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11958 11548 bytes
SHA-256: d8755fa17024573b56b62af2b6235728746b0d6eec5a021f7676de2c8fb10a50

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