Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab582bb87aec0ae…

MALICIOUS

PDF

67.6 KB Created: 2020-12-21 12:12:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d2e095861bb9e602dd62f6c26ac49ede SHA-1: 72e5c54df330fa2de95c5deefed5a7c27bcbfa38 SHA-256: 3ab582bb87aec0aece8eaac7e34dfadb4616fa643c84986364496d781ac60262
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?utm_term=playroom+rugs+ikea'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

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://gettraff.ru/strik?utm_term=playroom+rugs+ikea In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_5fad451295816.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/8b8f3847-525e-419c-b14a-6736bbeeeb7c/14648958519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd20d5df-ea37-4af0-b1d3-b365e3913e4d/rajogaserilaxamaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/diff_and_sum_of_cubes_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53338df7-7883-4cc2-bff2-d62efb316ee6/monedas_para_imprimir_para_jugar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c85a13-9056-41c0-b569-78e1cd61beea/sage_leveling_guide_iro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc81a80526ad1a5999a26b/t/5fdcf7cb588de40b450eb3bc/1608316880352/buwopoxifufinujuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfa783d5-dbeb-446f-8b4e-4ed0c6d3174f/fidewegapifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5bbd912-58d6-4cdb-94ec-b50de029c49c/satupixodem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c0c98f3-a570-4efb-97be-cf24866533e1/19955515222.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/84644196638.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_off0000c9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CE 5172 bytes
SHA-256: 63a2ca81109540c049b7ae4fcdc0ae45d6100568a7225d4eb2abb68534f9b00f
font_01_sfnt_off0000db60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB60 11536 bytes
SHA-256: b62f59db70ac10b3933e0fd5b4f5491bdcbb2e69fc38d54b31aa1d8c52b975c1

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