Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b02230646697996…

MALICIOUS

PDF

73.3 KB Created: 2021-02-21 05:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 01b47f2e0eea0f14936a0ad9b0a85006 SHA-1: db7f8aced9322daefeaf224ec31a759621b3c5af SHA-256: 4b02230646697996f0deb4e69ed6c47a7ad2e431544c6ca653f7b2befaa168d8
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains text related to 'agile testing techniques' which likely serves as a lure. The embedded URL 'https://jottigo.ru/strik?utm_term=what+is+agile+testing+techniques' is a primary indicator of a phishing or redirection attempt, likely leading to a malicious payload or further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=what+is+agile+testing+techniques PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471114/normal_5ffaed7f1861e.pdfIn PDF document text
    • http://pajugurujuvavux.22web.org/91871115719.pdfIn PDF document text
    • http://1yamal.space/star_wars_galactic_conquest_board_gamerprbq.pdfIn PDF document text
    • https://lazekikobetilof.weebly.com/uploads/1/3/4/4/134443651/tejatasowixibosiga.pdfIn PDF document text
    • https://bawilawuvibowe.weebly.com/uploads/1/3/4/4/134401702/mavikozo.pdfIn PDF document text
    • http://kuvuradivikosef.iblogger.org/certificate_templates_online.pdfIn PDF document text
    • https://sofofiwolasaxu.weebly.com/uploads/1/3/1/8/131856039/de9c295cbcf7b.pdfIn PDF document text
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/2d05223.pdfIn PDF document text
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/4959019.pdfIn PDF document text
    • http://sajutasure.22web.org/vovisupakimax.pdfIn PDF document text
    • http://proita.space/writing_a_simple_business_plan_templater4iwy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kodinola.rf.gd/zoxotudum.pdfIn PDF document text
    • http://nivanuzamudexe.rf.gd/38774711716.pdfIn PDF document text
    • http://nimukefamax.rf.gd/4264809442.pdfIn PDF document text
    • http://namajuve.epizy.com/13049307417.pdfIn PDF document text
    • http://nofifejagarenut.epizy.com/wejadozemaxomenifegagar.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_off0000e1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E5 5104 bytes
SHA-256: 222f0ba2e47ff2f7005125e6e7095ce9d5bebde32f82cab341d268decf00fcb2
font_01_sfnt_off0000f350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF350 10812 bytes
SHA-256: c3ccbdc1fabaa6961508548628a2fe7268fc5e39c153f4821e2b0c4238027259

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