Malicious PDF — malware analysis report

Static analysis result for SHA-256 e975f5f3ce9bcecd…

MALICIOUS

PDF

72.3 KB Created: 2020-12-27 08:57:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 550f09be008f83526f70409289ee5d2b SHA-1: 7868f64b9547158b2d9ac4d5b823c415d191b617 SHA-256: e975f5f3ce9bcecddc7804ff5ac494bb568d27bdb2e752ca4be6aaf51af501d2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. An external URI pointing to 'trafffe.ru' was extracted, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that could be interpreted as a lure, such as 'Warning after effects template'. No scripts were extracted, but the PDF structure and heuristics point towards a malicious intent to redirect the user to a harmful URL.

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://trafffe.ru/aws?utm_term=warning+after+effects+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382190/normal_5f9d5be038646.pdfIn PDF document text
    • https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/xuruxudanab_zuforu_vejutudaneg.pdfIn PDF document text
    • https://wopusuxosar.weebly.com/uploads/1/3/4/5/134583764/9e1dfe.pdfIn PDF document text
    • https://bemazinava.weebly.com/uploads/1/3/4/8/134890863/galajijekedolu.pdfIn PDF document text
    • http://Aedownloadpro.coIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/19173581459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802715cc-401a-40b8-a18b-166eed8c6923/ridakuluxa.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/migafutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bacca898-bd89-4908-bbd2-a99dfdb57faf/olegario_chaidez_canelas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e3e2bac-5603-4f27-89e2-fb1417224c6f/morrowind_doomed_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a583d03-1538-479a-856c-f9a47102be30/phantom_of_the_opera_script_andrew_lloyd_webber.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunoje/21021863077.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_off0000dead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAD 5348 bytes
SHA-256: 72164bc0afbda5608f24355f2de82ddf0a4685bc1ab517008e7ffb04b2b8a714
font_01_sfnt_off0000f0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DE 10360 bytes
SHA-256: 0d31e5b0261f60d7620a96a5d90f160e2d79a890cd81f06fc833856aa0feae08