Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f53820e1af20b8…

MALICIOUS

PDF

70.3 KB Created: 2020-11-20 02:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 6605fcf2219e02a1b3828b4180255fb1 SHA-1: 4fd951aed3a776b631faf93ebb59355c9a9f8779 SHA-256: a2f53820e1af20b81d5fe772e46ec08a99d6129419e45ea8b59ce56220d552b3
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://traffnew.ru/123?utm_term=is+15+mm+endometrial+thickness+normal', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a medical query, suggesting a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffnew.ru/123?utm_term=is+15+mm+endometrial+thickness+normal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408878/normal_5fb35ee48553c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_5fa4a70c1bbd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465262/normal_5fb35d1308f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424364/normal_5f98fd6eb9906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5f9eba69189d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406516/normal_5f9c04ffd0ed3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367643/normal_5f8e9a3ccd9e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413462/normal_5fab106d861e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446035/normal_5f9e5beeefe1e.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/66fcb3dd-af11-4f5d-a2b5-701e80d205e5/25363334509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7858ce13-b5ae-4afe-b5ba-e916df4c71f0/gukaderaxexugazemet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b100981e-796e-4c2a-960b-5ad8b029000e/xemegilatujanotogokesida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ade609-ac8b-486a-96a9-2453aa85559c/fivuwewajob.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/65202737549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462e90d5-35cd-4942-a862-1d0f9d9ded70/43856483963.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_off0000d6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BA 5356 bytes
SHA-256: 829042563f164ac97b0ba2f640b1c406b7530e44a348249cb46333ade9fafd7b
font_01_sfnt_off0000e8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C8 10636 bytes
SHA-256: aa91ef135dc6b211b3fcfdf171058458914a0c0bd5ab351270c988e684a65baa

Open this report in the interactive analyzer, or submit your own file for analysis.