Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f5e7c1ee5d5793d…

MALICIOUS

PDF

76.3 KB Created: 2020-12-15 07:05:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 168cde621aa4f7802bea1fc6bb085d4d SHA-1: d1925fe7d8e4347b66020dd173f69471fbf22ad4 SHA-256: 5f5e7c1ee5d5793d5842a53fe286b2b29838c7e9f36ed366c3706843b6e1df7e
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical ClamAV detection of 'Pdf.Phishing.Trojan'. A PDF_URI heuristic points to the URL 'https://trafffe.ru/123?utm_term=chest+physical+therapy+percussion', indicating a likely phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection profile strongly suggest a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://trafffe.ru/123?utm_term=chest+physical+therapy+percussion
    • https://cdn-cms.f-static.net/uploads/4389823/normal_5f8ed0efab568.pdf
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f90b5dc62f02.pdf
    • https://cdn-cms.f-static.net/uploads/4380230/normal_5f927473bb1be.pdf
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/sisepefubituzijox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf888ef3361272aebb8a1/1606219912396/songs_from_shrek_the_musical_jr.pdf
    • https://static1.squarespace.com/static/5fce2aea564f736a582ffe04/t/5fd11d91cfe9e70e835657a1/1607540114947/yoda_dark_side_meme_generator.pdf
    • https://uploads.strikinglycdn.com/files/e2b90154-cfce-4d96-8d01-244cc561c823/super_calorie_shake.pdf
    • https://uploads.strikinglycdn.com/files/5204d7a9-f2bc-44bc-ac2e-a8092f88e000/.pdf
    • https://uploads.strikinglycdn.com/files/3a378ae4-41cc-4064-ba1e-6eadd351ebd7/vikerakugizekutuja.pdf
    • https://uploads.strikinglycdn.com/files/c2daca11-6673-4f32-be80-d7208d6e6fc2/icebreakers_for_teenagers.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000f996.bin
3121d4afa06e96176e46505096b67007e507e22c7e5a220577ae9bfb6f0c95a1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF996 18192 bytes
font_00_sfnt_off0000c714.bin
c4e469930ea488d358246170a6f30629fc5642001b76456a6858227833c96177		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC714 5028 bytes
font_01_sfnt_off0000d82a.bin
44d91f72530dc510f8cd9712bbbfec75abe819e45a8dc7b8cee68cb9185d442e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD82A 9716 bytes
font_03_sfnt_off000115bf.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115BF 4324 bytes

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