Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab9d9c2ffe1c15c…

MALICIOUS

PDF

87.6 KB Created: 2021-02-19 18:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b55083385682eac0f26fdbdc05d0230f SHA-1: 7ac8174a87d4c17ab4d74714c82625f59f39a838 SHA-256: dab9d9c2ffe1c15c1c13ccffc309c66fbb1d1da6a4b009227e6c52a8b241f3ee
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms and phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of many external URLs suggest it's designed to redirect users to potentially malicious sites, likely for phishing or malware distribution.

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 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.
  • 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://baarspo.ru/strik?utm_term=oracle+sql+compare+datetime+to+date PDF link annotation
    • https://jipotawa.weebly.com/uploads/1/3/6/0/136097183/9173e31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415046/normal_5fd664cd4fcaa.pdfIn PDF document text
    • https://xonasuxodu.weebly.com/uploads/1/3/2/6/132681295/8eddedcd.pdfIn PDF document text
    • http://fishland.store/customer_feedback_survey_template_wordt5v95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486566/normal_6001f084ad29c.pdfIn PDF document text
    • https://malitorenifavo.weebly.com/uploads/1/3/4/0/134017021/mixilurunur_pawesemakadas_sineko_kupolekawa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497638/normal_5fdff3f94573b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476938/normal_602efd002fed5.pdfIn PDF document text
    • http://scrlt.xyz/17611575720ffpqm.pdfIn PDF document text
    • https://vuminuzatadabem.weebly.com/uploads/1/3/4/3/134311796/sonop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410006/normal_60109435eb34b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405642/normal_5fe1b58760ccd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454172/normal_5fdd68c86fbe8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472501/normal_60048f3f18767.pdfIn PDF document text
    • http://neojust.ru/jazzi_disciples_ara_robaladwyco.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488581/normal_5fd674ee58230.pdfIn PDF document text
    • http://dezlice.ru/eo3_skill_simiwz3x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386828/normal_5febe16df1a7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464850/normal_5fef5b376303d.pdfIn PDF document text
    • http://groby-ritual.online/sig_sauer_p229_enhanced_elite_ca_compliant0bllv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE3 5372 bytes
SHA-256: 6b3d60d4d1db791a455c7e7b3dbb8a6be8251cee24978d0e90a85ad0459b8bf2
font_01_sfnt_off00012106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12106 15544 bytes
SHA-256: 3b5aa9bba2b4c691ffef5569f3d0f424e1e8e6ab4c128079f3cf4e55c2b32324

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