Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ed15117a44ae77…

MALICIOUS

PDF

141.5 KB Created: 2020-12-23 09:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec19731f606cbf41b355090067166fa7 SHA-1: da6438c279951b6e3e1062f325a824f2b0da44fc SHA-256: c9ed15117a44ae776e2097a888ce74bab53c037af68ba5cbbd68250708d2db4d
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 indicating phishing and trojan activity. It contains an embedded URI pointing to 'traffnew.ru', which is highly suspicious. Although no scripts were explicitly extracted, the presence of an external URI in a malicious PDF strongly suggests an attempt to redirect the user to a malicious site for further compromise.

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://traffnew.ru/aws?utm_term=arabic+characters+forms
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/vonusirukete/kimajudamanagekivol.pdf
    • https://s3.amazonaws.com/fifuto/3371598847.pdf
    • https://static1.squarespace.com/static/5fc0f27ea13a450babf44921/t/5fc1eedf5147b14804788f6d/1606545120609/manual_for_spiritual_warfare.pdf
    • https://static1.squarespace.com/static/5fc64b09f7cf8c75404f74c5/t/5fcedbbd509e863c68207780/1607392189373/power_platform_app_maker.pdf
    • https://static1.squarespace.com/static/5fe271a95ddc597cb220ed83/t/5fe286d795f08e4e4f90aef2/1608681175922/71779743873.pdf
    • https://uploads.strikinglycdn.com/files/3690a9f1-f897-42a8-ba4e-f86801cb1180/14260381476.pdf
    • https://uploads.strikinglycdn.com/files/dc1a2618-d58f-4716-982c-35da1517c250/glamour_photography_poses.pdf
    • https://static1.squarespace.com/static/5fc65c44d49dd1244759b117/t/5fc8a39790a4f8549d7da8e9/1606984600715/save_the_lighthouse_peninsula.pdf
    • https://uploads.strikinglycdn.com/files/6c7ac4ef-dc7d-4d0a-a806-9dd2c25b74f1/92208624013.pdf
    • https://uploads.strikinglycdn.com/files/0d42ad53-5fa3-42c7-9a84-8d030acc1dd9/24384892718.pdf
    • https://uploads.strikinglycdn.com/files/d3a3cf08-0e55-49e9-a910-3dae9a95de79/bogobuwokosufagaxita.pdf
    • https://uploads.strikinglycdn.com/files/bf59bebf-bfcd-45ce-94d9-0be81e483951/69_super_bee_specs.pdf
    • https://s3.amazonaws.com/vizegemawokaxe/wonokoxur.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_off0001d6e5.bin
c53d6a97241ca0bb4ecb7e88e4490fdfcdf2368bb7b8c27b67aaa5686df20882		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D6E5 41324 bytes
font_00_sfnt_off000190f6.bin
d19f0f91b0704d2937c9ec491f1f9982f10252acba9b208c431e18d6515773dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x190F6 4900 bytes
font_01_sfnt_off0001a196.bin
c23cb44e3d93885a807137e59b6da2790bed9ee2566e5ee4a9a5fd66b84f7159		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A196 18408 bytes
font_03_sfnt_off00021a92.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21A92 4324 bytes

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