Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d5941f74542983…

MALICIOUS

PDF

88.6 KB Created: 2020-12-31 04:34:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3c3415d84c00ecb2af751d569421f34d SHA-1: 9ffd805eb893777ae3ad54e6f702d4490fa1c395 SHA-256: e0d5941f7454298365c86cb76c45e47efbe2b5edb092480935315d676aa28962
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 'https://traffset.ru/strik?utm_term=sea+land+air+plus', which is likely a phishing or malware distribution site. The PDF structure itself also shows signs of manipulation with duplicate object bodies.

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://traffset.ru/strik?utm_term=sea+land+air+plus PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387427/normal_5fac25b5b78f9.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/jcjdjeZ/21815578828.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/9igshh4/gakovidaninumipubu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421781/normal_5fb5f8a210587.pdfIn PDF document text
    • https://cdn.sqhk.co/joraxeneli/gjmicjb/asana_client_portal.pdfIn PDF document text
    • https://cdn.sqhk.co/vojogalu/r9KhcLz/funalimavepibidikumawuj.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/bulolimepol/97324733568.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/45002740322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c674f35-f436-42b7-a346-9ee099f6c936/wurizufilepojikemiw.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/tamilrockers_tamil_movies_hd_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/binder_cover_and_spine_templates_word.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/xabadedisiraxen.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/popular_mechanics_used_car_buying_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/428e7fba-4057-4540-934a-da95b4bd2bc7/xidudasisebefinaxatu.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/witax.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_off00011be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE4 5056 bytes
SHA-256: eabcfb665dba1b493e405da3b351d74dd201a186d1d30c6a7e3a6d7a5b8be4e4
font_01_sfnt_off00012d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D17 11872 bytes
SHA-256: db7844faf09b70945be880596ce7a1d51df46ef3b8a70fb382e74d44e4e39b08