Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a98c75962a060e…

MALICIOUS

PDF

113.4 KB Created: 2020-12-23 10:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ded8d58ee8900d0c1baa026090db1954 SHA-1: 75fef07d70c8734a97bcf249d8a220766090f28e SHA-256: 02a98c75962a060effa180aa2263bcd058949a0e8223d9f4a9ab8b3b74a1c27e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV. The 'SE_CLICKFIX' heuristic indicates a social engineering attack, instructing the user to press Win+R or paste a command, which is a common method to bypass macro restrictions and execute arbitrary commands. The document also contains numerous external links, suggesting it is part of a link farm or phishing campaign designed to redirect users to malicious sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://trafficel.ru/strik?utm_term=cross+the+road+electronics+github PDF link annotation
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/3133283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5fa9b08660f75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f99feb8bb395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_5fbada9de6d45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416656/normal_5fd1dfe728b3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419822/normal_5fa105f976103.pdfIn PDF document text
    • https://tuzafezinaxav.weebly.com/uploads/1/3/4/3/134319976/zexikemu-delufenumezo-sodumigiwarekuv.pdfIn PDF document text
    • https://sosabugipos.weebly.com/uploads/1/3/4/6/134657522/nixadiwiridagig_gomibufif_guleva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403270/normal_5fdfa7d0b7603.pdfIn PDF document text
    • https://mosuzikovadapa.weebly.com/uploads/1/3/4/6/134667275/16d947e9d4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17038 5248 bytes
SHA-256: 86aa1577d141eeb37af682511bfe4e5ab87302714dbf673f9670614cf0eb7c96
font_01_sfnt_off00018200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18200 11764 bytes
SHA-256: 04b3ebb9ab7c8331cfef686d7a493130475a9addd159ba395fcfce073f0d0e45
font_02_sfnt_off0001aa23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA23 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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