Malicious PDF — malware analysis report

Static analysis result for SHA-256 2facb99028b0bc19…

MALICIOUS

PDF

70.3 KB Created: 2020-12-26 04:35:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 7ee4d6b91a87f60e274ad1b8a293746f SHA-1: 757c91955442a231a84df82295ed7aa485e2846e SHA-256: 2facb99028b0bc19426dff21fd2c40f999d58640d16824099e8ec346e61821b1
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to educational materials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/strik?utm_term=cbse+9th+class+science+solution+pdf PDF link annotation
    • https://cdn.sqhk.co/tiwumixe/FmCnDhi/84017824249.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421468/normal_5fc8eb39a4f85.pdfIn PDF document text
    • https://cdn.sqhk.co/kobedobofepo/TzImdEI/bodibopobiximojovuxobolis.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/binoge-pajutinara-kefafotusaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5fadd04b77d37.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/51fe435c-e312-458f-a8cf-d01b5f53a18d/tefiser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88cf5077-e033-4422-a491-eea7b35773ff/56698322273.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/apple_text_message_from_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/togolimikezon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58c07d2a-e5a2-4215-b2cf-01613ee8d81f/42566903391.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_off0000d600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD600 5348 bytes
SHA-256: d112af2045f513966b2c54ad7fd86d712aca4ce81b709cff34547c9ac344cd5d
font_01_sfnt_off0000e823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE823 10792 bytes
SHA-256: e2702a1978602a3095a7d066e2c7bbdd902ab3bbd4b292c78471a23a9ac2e3ca

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