Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcaf50bd1a79056…

MALICIOUS

PDF

65.4 KB Created: 2020-12-16 00:48:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3d1e029421a7befcde07488bae6581d1 SHA-1: 1a4a5be9a0b73ce31c3688a36ff61cc6e8fe4739 SHA-256: afcaf50bd1a79056ebf7b3cb811b944e84a1a724ef1934c983cd9a71da28a6cc
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 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'George Costanza painting meme'. No scripts were extracted, but the presence of external URLs and the malware detection strongly indicate a malicious intent to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=george+costanza+painting+meme PDF link annotation
    • https://keberalu.weebly.com/uploads/1/3/4/7/134725283/2244527.pdfIn PDF document text
    • https://juzumefewuw.weebly.com/uploads/1/3/4/7/134766708/daxokatin.pdfIn PDF document text
    • https://dolofironikuz.weebly.com/uploads/1/3/4/5/134588294/tevefuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474218/normal_5fb5880eda42b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_5fd9355c94cad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5fba37f8b8309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455380/normal_5fd09d724ba81.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/6fe8cef2-155f-46c9-9c4a-f7f5c4024e88/basd_google_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31c5cc3b-5805-496f-9629-a5742e774111/69055225306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50514529-1d17-4f5a-b8f2-194d65d8b668/92618566211.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ffaa084698658e6c0689/t/5fc582fe08845d0924472d68/1606779658891/21232071576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/847f96f1-ae3b-44f0-ac5d-a58a41ce3d78/tanewime.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13e7dd49dd12447366960/t/5fc299369ee0f32b87a7cc52/1606588727819/34070509878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1abf5afa-c8e8-4537-9bb7-71e5dc32d0a1/35080784928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d834f159-a2a0-4e45-86df-3ace2ab70ddb/demibasiduvejijumitajo.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_off0000be6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6C 5304 bytes
SHA-256: 8213b21c685b267f79ed27d88e82870c0c1df65c55d3af4b192f4722b5e36af4
font_01_sfnt_off0000d076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD076 11648 bytes
SHA-256: 281396dd04fec91d9ffe5143f3048027d24ec6579acb45ab08d05caed6a18524

Open this report in the interactive analyzer, or submit your own file for analysis.