Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ac02781b4c6988…

MALICIOUS

PDF

69.2 KB Created: 2020-12-17 08:58:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ada3d171e33167f3c196904a53a55df SHA-1: 1cb37997e5db79d1356fff520ef64bc16b5787f5 SHA-256: 38ac02781b4c69886f2a28fcb4e72b2b5a895295f5b9080b11574b532f00ab1f
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malicious redirection scheme. The document body, though heavily obfuscated, contains text related to 'seven super girls videos' and metadata indicating it was generated by wkhtmltopdf, suggesting a potential lure to adult content or other malicious sites.

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://traffine.ru/strik?utm_term=seven+super+girls+videos
    • https://cdn-cms.f-static.net/uploads/4457839/normal_5fab66ab40784.pdf
    • https://cdn-cms.f-static.net/uploads/4374535/normal_5f8c848bba59d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fe1eb134-6a17-4be0-9b39-1c08b643c5f6/manual_of_surveying_instructions_1973.pdf
    • https://uploads.strikinglycdn.com/files/0c75ac6f-61c7-42a6-8b88-7c3cb89eef65/87485598735.pdf
    • https://uploads.strikinglycdn.com/files/f89c09d9-d365-48bc-9f6f-78d00c52c4d2/91863099610.pdf
    • https://static1.squarespace.com/static/5fc0e2b72bbd740658066ec4/t/5fc15e313c6ccf69f3913967/1606508081838/jcpenney_stores_in_massachusetts.pdf
    • https://uploads.strikinglycdn.com/files/b2a148cc-3477-48ae-9cd8-73dcc40340da/piwogarabemikolono.pdf
    • https://uploads.strikinglycdn.com/files/5dd0be04-57c6-4186-9781-b39afb76dc97/purukitewelovezeje.pdf
    • https://uploads.strikinglycdn.com/files/fb8cc01b-5fa9-4b59-82f7-31116ab6b5b9/eve_online_cyno_guide_deutsch.pdf
    • https://uploads.strikinglycdn.com/files/66314869-acee-42df-916d-896fc2f58701/99176075293.pdf
    • https://s3.amazonaws.com/wekibik/87838368743.pdf
    • https://uploads.strikinglycdn.com/files/3e0e1427-674f-4303-9df2-35073f24536c/bitefote.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c41d.bin
bae3acd3ee989d85f4a179f59f0e2dc1e4f97b3088d802d9a611462b56e58e79
pdf-font-stream PDF embedded font (sfnt) at offset 0xC41D 5080 bytes
font_01_sfnt_off0000d571.bin
21e7c63a9f79adce4d0d5663455e6d485a2a2f56f0aa169d05a2605d7a5f529d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD571 2956 bytes
font_02_sfnt_off0000e1b5.bin
445002173f28e72e0c1d00f02ad93d727554a6ddafd2c82af5e93e52d94dfcb9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B5 11236 bytes