Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fe0eef2d91ec99…

MALICIOUS

PDF

85.3 KB Created: 2020-12-17 18:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b56b6285fb4bd13d8ff47045ec4a8bab SHA-1: 8e72d5e13d817a4981a7ab6f72a11ea457856a13 SHA-256: 54fe0eef2d91ec99eb21ea90c5407ab440f74f18bb83b798e83c3a4f0084ce8b
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 'trafffe.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to a book search, consistent with phishing tactics.

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=travels+with+charley+full+text+pdf PDF link annotation
    • https://sinekagu.weebly.com/uploads/1/3/4/8/134855021/5977662.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/jasurunavopudej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f882ea028000.pdfIn PDF document text
    • https://pebepatesova.weebly.com/uploads/1/3/4/4/134447190/542490.pdfIn PDF document text
    • https://josuriwomevopi.weebly.com/uploads/1/3/4/7/134769094/9059047.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/bufipevuril/friction_physics_lab_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58a53d49dd1244753c377/t/5fd686d9267c8d0ace4cd840/1607894745611/52316450780.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18e758787e8798970a1dd/t/5fcf08e257846c5b834d2cae/1607403746821/71658721914.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfd0200f7af3919d3b49c/1606221072882/99951926263.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce506de48d292cf0cb8988/t/5fd6719fdf2f0204c238c3a6/1607889313297/lavo_pro_6_bleach_safety_data_sheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfdb415687f52b6b7b2913/t/5fc1c0d27acac6192a023727/1606533331332/nioh_warrior_of_the_west_armor_smithing_text.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_off0001126d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126D 5512 bytes
SHA-256: 65be6085b0490f8b1013cee70c4319029fedce032ab666bcfba27829dbfed08a
font_01_sfnt_off00012546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12546 10372 bytes
SHA-256: 91de7b235fb52188bbce4a6aa495ebd6258a62a4b3b80ccf0d1104ca085a2055