Malicious PDF — malware analysis report

Static analysis result for SHA-256 1196da921226a360…

MALICIOUS

PDF

74.7 KB Created: 2020-11-13 17:51:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 787c2ec52ce13b669893f5fce3e85ff0 SHA-1: 366946b8719dadb4cea76c71851fdff94d8a9a77 SHA-256: 1196da921226a3601ab45dce81b30cd15186142f27a8ab8f88f552f352883163
96 Risk Score

Malware Insights

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

The 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 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains strings that appear to be lures related to 'Birdman wonder woman'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/strik?utm_term=birdman+wonder+woman PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409396/normal_5f930f600fe04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417669/normal_5f95cc98eb5d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401545/normal_5f929a2d2b5c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/yfz_450_carburetor_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/9th_class_physics_book_punjab_textbook_board_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/127be78a-c079-4529-a644-2389fcef907e/nedenejeburap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc7ef0d6-a4bd-4326-bbc9-f848ff106587/40791130204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ad7850-8d03-4c3e-a212-81b28d0249cc/dallas_cowboys_nfl_championships_1996_highlights.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/252cad20-34e1-481e-94f8-ba6ae79e627f/34023980021.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/54_inches_by_74_inches_in_feet.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/kosutakevupoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd6c7f3a-5b21-4082-9b04-0f12937a754d/97085979679.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/gobitiridebejukojuzapijus.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_off0000e938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE938 4900 bytes
SHA-256: 216624d202316704ea48910455261893490500cf30c5c1e3024747157c42e644
font_01_sfnt_off0000f9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DA 10888 bytes
SHA-256: bae478e792e1970a540a8631e41cf59774e4443ff82ad35cdcd3a7d8d1f87ec9