Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3276ad3201b944b…

MALICIOUS

PDF

73.6 KB Created: 2021-02-26 17:53:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 18680e1d39cfac048d295b5bbf83f1f3 SHA-1: 0be2faff7562c4d14e9c41501b26ae94a7214b69 SHA-256: b3276ad3201b944b278134be5775a4740565aecd033d5808061aedd1dbcdd300
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to external domains, suggesting it functions as a link farm or phishing lure. The presence of external URIs and the overall structure point towards an attempt to redirect users to potentially harmful content or phishing sites.

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://dugedepap.ru/wix?keyword=nba+2k19+cheat+engine PDF link annotation
    • http://mumolazesinidix.getenjoyment.net/werewolf_totems_white_wolf.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/how_to_reset_installer_code_on_safewatch_pro_3000.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/malenerajonisajakpjubp.pdfIn PDF document text
    • http://hhizmet.com/53686904128fvepe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446285/normal_60362d2b89238.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/tableau_des_accords_guitarelpldb.pdfIn PDF document text
    • http://clobuss.ru/ulver_themes_from_william_blakes_the_marriage_of_heaven_and_hell_download73q2v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403130/normal_5fe30e118cdf2.pdfIn PDF document text
    • https://funapimezu.weebly.com/uploads/1/3/1/0/131070883/c4ffab4d.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/60291400560.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/dexavonirabaxapodi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411493/normal_5fcebe25572d8.pdfIn PDF document text
    • http://wamepiguvoj.iblogger.org/hog_hunting_guides_in_nc.pdfIn PDF document text
    • https://jiwumakot.weebly.com/uploads/1/3/4/2/134235931/4f15ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407804/normal_5fd78327b4f41.pdfIn PDF document text
    • https://xoxisosozujuna.weebly.com/uploads/1/3/2/6/132680853/4a5cffb129ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bewidiri.rf.gd/17809548820.pdfIn PDF document text
    • http://xunixamobogu.epizy.com/and_so_on_in_formal_writing.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_off0000e389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE389 5268 bytes
SHA-256: 8b6c64fa2bc2e1e54eb4f0761f67f543ad9cc733ecdd10175054938f82db71ca
font_01_sfnt_off0000f585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF585 10608 bytes
SHA-256: cf36b075df30cc315dc9e68179110fa1953d326d75d9b4561b9d74a29ab80584

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