Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c89eee742541274…

MALICIOUS

PDF

72.5 KB Created: 2020-11-20 08:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6a29a224f35d055691aa8cc5201dbc2f SHA-1: baf726160ba3681c22e4a9ef70e17ccab4fd92da SHA-256: 9c89eee74254127465fe5ecc5138cc021c6126278bddf19312095db6db670145
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'trafffe.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to language learning, aligning with common social engineering tactics.

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
  • 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://trafffe.ru/aws?utm_term=verbe+etre+et+avoir+en+anglais+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5fa1fd07a767c.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/wigunopel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488581/normal_5fb2e5e5c0ccf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_5f8f6c1f08dea.pdfIn PDF document text
    • https://nabutamu.weebly.com/uploads/1/3/4/5/134525390/230de22.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/219f822f-864d-41af-8d9d-36858385dbae/dakukemexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76425ea7-84f1-4dae-b844-7f01a9cda22d/zipezamibafowipup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c87f586d-f086-4e2c-8918-8ca8572fd8e4/mode_d_emploi_chaudire_viessmann.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d937de20-9bbd-4deb-872a-02d3a91746ee/technics_sl-1200mk2_owners_manual_pd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc84ad90-465e-4c95-ad7e-4b47a0d5220e/jepirudure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e8bb600-6edc-4d99-9a27-eac58ae6358a/tubuvirilapedili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65d6dad7-a2b0-460b-843b-90536afa5bd8/19739535325.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A1 5376 bytes
SHA-256: cd8c2a5b0a10456ed0e9cdd4dddb604ad6775ff57c9e3bdf9dcb2815ec6df0eb
font_01_sfnt_off0000eb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB00 12860 bytes
SHA-256: 88a9ea39f63bc73599077ce556f981b650b4eed4298bedea8e1915596782b3eb

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