Malicious PDF — malware analysis report

Static analysis result for SHA-256 0012138eb5578526…

MALICIOUS

PDF

77.6 KB Created: 2021-03-07 03:51:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6fa94b3cf6f11251ad56ab51632997f5 SHA-1: 76d6df3b2edfa297e3782bf344195028745797c9 SHA-256: 0012138eb5578526f3aa20c2fba3433b07d90eecc46464e332b8d0f947a22368
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/123?utm_term=2019+ram+1500+crew+cab+5.7+bed+length PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369917/normal_60034fa9762ba.pdfIn PDF document text
    • http://wagajikis.iblogger.org/t_cell_differentiation.pdfIn PDF document text
    • https://dokupikojezox.weebly.com/uploads/1/3/4/7/134740590/3499044.pdfIn PDF document text
    • http://bavimobuxadu.medianewsonline.com/purekifaluzazugumafut.pdfIn PDF document text
    • https://fawirato.weebly.com/uploads/1/3/5/3/135392883/sogovagopilu-taxaxoselun-wakinel-kedikitamasudon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463010/normal_5fe8736816cee.pdfIn PDF document text
    • http://bezivodediz.iblogger.org/gunopagem.pdfIn PDF document text
    • https://narepugajud.weebly.com/uploads/1/3/0/7/130775299/vaputugud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366317/normal_5ff541db4ed1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476302/normal_5fcbe2ce750b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455194/normal_600c54ecec5c4.pdfIn PDF document text
    • https://lagomide.weebly.com/uploads/1/3/5/3/135304015/20a391435c128a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378619/normal_5ff5c57bd0298.pdfIn PDF document text
    • http://vasakuso.sportsontheweb.net/42967410602.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fujesotes.epizy.com/xiwiwixavola.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/runamochaka_angaraka_stotram.pdfIn PDF document text
    • http://refusunono.onlinewebshop.net/star_wars_unlimited_power.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/45243293463.pdfIn PDF document text
    • http://wevaxelim.rf.gd/niverujigemeb.pdfIn PDF document text
    • http://tegazadolital.rf.gd/2775637236.pdfIn PDF document text
    • http://bujekotu.atwebpages.com/majox.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_off0000ecba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBA 6032 bytes
SHA-256: bad7c127e193db15043b012fb1a988cf7768587d8eb8f7ac3cf7de00c328b6fc
font_01_sfnt_off00010135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10135 11584 bytes
SHA-256: 12cc24a61e691201425ac8d09d697ca9827d30ab4ba6eabb348e99cbad3d39bf

Open this report in the interactive analyzer, or submit your own file for analysis.