Malicious PDF — malware analysis report

Static analysis result for SHA-256 86adc777daac8420…

MALICIOUS

PDF

75.5 KB Created: 2020-11-23 15:32:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 281f57d8de08358eb355901e41b83a99 SHA-1: 1776a2ea32ed3c16ac29d67f65b4e0453e16157d SHA-256: 86adc777daac84209cb290e84d725ea01de50785dac91319bf576621abb004a8
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to 'trafffe.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to 'Way of the samurai' and authoring metadata, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=way+of+the+samurai PDF link annotation
    • https://pomudada.weebly.com/uploads/1/3/4/3/134382041/9265361.pdfIn PDF document text
    • https://sidunaxegizu.weebly.com/uploads/1/3/0/7/130776644/5973908.pdfIn PDF document text
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/fubute.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/wirul.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/xejonixub.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/b3f6b0a1-434d-4c7a-9107-49f1440849ad/fit2fat2fit_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2824ff37-f526-4729-83e4-9337dc78a4a3/mokujijizofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb6265bb-9cdd-495d-ac2e-a1fe248b5a7b/pokemon_omega_ruby_citra_download_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/garmin_fenix_5x_plus_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/adverb_and_adjective_exercises_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49758ec3-d553-4893-9bd3-419ef11068b1/22378788431.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0F 4488 bytes
SHA-256: 613e1ba8513a8ea0af3d57fdcb008cf493ba82c0a0625a817c17c56c8b78e5ea
font_01_sfnt_off0000e9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9ED 5088 bytes
SHA-256: b4938a4798fa4fa5daaebd2bd01bc454ccdc0bc11a9dde465724ed062c9fddb9
font_02_sfnt_off0000fb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 10828 bytes
SHA-256: 9ad12ebf2d9bfc3b84a2af72946c778733fe22998f16519eb7111dac90e0483a