Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e6e957aeaf3968…

MALICIOUS

PDF

68.4 KB Created: 2020-11-25 15:30:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 97d72aefc4167326d735c330824f7ac2 SHA-1: bcbaba2c177813cc6768f5ce7dfc87c7e1b14bf2 SHA-256: 51e6e957aeaf39682e6e8bdd131d98bccfc525bc495ad7159b31a516c96b236a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'traffnew.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'Western guide to feng shui'. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?utm_term=western+guide+to+feng+shui PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f8e71a86477a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370053/normal_5f8893b0e239b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f89ef7d6a63c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494877/normal_5fb3c93487c94.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/lekezaru/horace_ars_poetica.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/creative_writing_module.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/top_kid_gifts_of_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/jumeka.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/assembler_deux_fichiers_ensemble.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/motorola_talkabout_t600_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/vidmate_video_downloader_apk_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/celotex_ga4000_50mm_data_sheet.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_off0000cf46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF46 4940 bytes
SHA-256: 1f801beac3211683b44909f1a148fb0731fc1b9dff0e5b30247a2aaeed2293b1
font_01_sfnt_off0000e01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01D 10840 bytes
SHA-256: 2febf20fe3dc60487b23e731643abebb5d8e359d15d2f6a0f895cfdf42c807e3