Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f27128b691c117f…

MALICIOUS

PDF

68.5 KB Created: 2020-11-24 21:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 007f06429b27a66bfa3cdfe5b80a1d52 SHA-1: 7748c86fe8539ce19f114f21664c651294a123d3 SHA-256: 9f27128b691c117f6b9c7dd38aa367c51f0dacba436a26e4ac2b7990e78d1575
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafffi.ru/123?utm_term=5+minute+morning+rituals', which is likely a phishing or malware distribution URL. The document body, though heavily obfuscated, suggests a lure related to '5 minute morning rituals'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://trafffi.ru/123?utm_term=5+minute+morning+rituals PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381104/normal_5f9c26eec45d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490244/normal_5fb7a4de74abd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5f959cbfa791b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415061/normal_5f9f2d258c58f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f9399cb26e93.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/c2c8e464-0496-41bf-b091-62b63f668581/84430930290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f240d62a-43bc-4b65-968e-d85f90a52f2d/funezufizubowuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184ded89-49e2-498b-b20b-f7b853b385e9/nofona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbebdcf3-da66-4489-a6fe-5887d9ee0db1/laxuduroxuvutekenif.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/camp_pinewood_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de851bdd-5537-416c-bf14-67bb3fa9ec5c/lazuzojuwuwokijeluketu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93ac172b-7d6e-4648-abb0-1a249aa44082/55191749959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e4cdba-c36b-4f23-bcaf-a481c2f9404a/tapedelizunogina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9547494d-52b8-40aa-af92-625aea9eff47/gafaretikedatekif.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_off0000d132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD132 5036 bytes
SHA-256: 8e61a46dd201d260b36e65f17590e0ca8634027741e99be9e6a71c9d76d46ad5
font_01_sfnt_off0000e238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE238 10376 bytes
SHA-256: 9af4f3269371c11fc14bcc68c9ddb4a892d8746289ffcab9be6cb76f18bb3729

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