Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1187b1b0351e27…

MALICIOUS

PDF

59.3 KB Created: 2020-12-06 17:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 02f30baa796884992fb0c592776a32aa SHA-1: 72dd1deb082a7f55ac97a59197fca66a9b7078d3 SHA-256: bd1187b1b0351e2738e7fad50d3c4c6999cd896fe17296366cbc54287f31fe8e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://traffine.ru/aws?utm_term=synonyms+for+tired+word+search+pro+answers, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/aws?utm_term=synonyms+for+tired+word+search+pro+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4472503/normal_5fa548c00d69d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f8a2c86ea3d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486346/normal_5fc81ba3c70be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393220/normal_5f91200251db1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_5f98916090d2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5fc10f84ac031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380383/normal_5fb6b5da69315.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412599/normal_5fc6a2d71ed61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_5fa3c9f5c8df6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc14748c89e1c4b8fc0f61a/t/5fc999e787b36f46d4f8e83f/1607047657665/69021785383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d5b4492-5e3e-44ab-9826-55363012d66c/traduire_anglais_franais_un.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/macadamia_nuts_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/poseidon_and_medusa_children.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_off0000ac53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC53 5660 bytes
SHA-256: d44e50de30bc5b5ba81977a448c2e70a74ca9360f26031276526242b74b3679d
font_01_sfnt_off0000bf85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF85 9672 bytes
SHA-256: 1f604165fe49007e46b0bc48174d4ec0cca7b0583df90a0f156a1c2805955e07

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