Malicious PDF — malware analysis report

Static analysis result for SHA-256 c286455f2bd51caa…

MALICIOUS

PDF

86.2 KB Created: 2020-12-17 17:58:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 96a32ab9ec0b5b795430a5932c78e1bf SHA-1: d612056ddc8fab2d80ca64a94d3273e430b19406 SHA-256: c286455f2bd51caa11973247f43ff0c5a3955bfc99ad101182478ca6e354d35b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffking.ru, disguised as a Samsung appliance manual. This indicates a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/strik?utm_term=samsung+rf263beaesr+manual+defrost In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5fb6a0148bac8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483345/normal_5fc3ebf637189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5f9845f4c22c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527164/normal_5fbba086259d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9152556-ff5e-4092-8e63-69f26c87ebb9/wixoteno.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc72731eddbb05c6893b1dd/t/5fd67f98ab777271769380d7/1607892888675/cinema_hd_apk_v2._1._1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68574b09-37d4-4086-bbad-3c772939d0ee/70891698560.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/35864474107.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/safety_coordinator_interview_questions_and_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e99a0a2757459be2ef6a/t/5fcd435d5d2e6f3bda4a33dd/1607287646276/tafl_game_pieces.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa3e00c-fc18-4d2a-84fd-35521725e52a/moxevokinika.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_off000113da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113DA 5920 bytes
SHA-256: 0c9a4a549d7654330b8fbbf2c45b80330c1d9b10bc922dcc249ff0ce81b6408e
font_01_sfnt_off000127df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DF 10636 bytes
SHA-256: 31375fcd53aec61f0050d3f0b5f184162b4578130048c91f5169882597c4c1b3

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