Malicious PDF — malware analysis report

Static analysis result for SHA-256 f91c5cb8dd58508c…

MALICIOUS

PDF

57.1 KB Created: 2020-11-04 08:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 582fd19c78446a2c3603f26522cc4d01 SHA-1: 1c2357c74cfa15f22134b1d22ce6e44536ad2ff6 SHA-256: f91c5cb8dd58508c45ca6a8d8644f7113b014d3d06156514aa7b4348ddc6ae47
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://gettraff.ru/aws?keyword=op+fe+scripts+roblox+pastebin', is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?keyword=op+fe+scripts+roblox+pastebin
    • https://cdn-cms.f-static.net/uploads/4404116/normal_5f93179092db8.pdf
    • https://paripipedaninez.weebly.com/uploads/1/3/4/4/134444050/pagukemilow.pdf
    • https://zogerosolubelu.weebly.com/uploads/1/3/4/5/134576434/f408d82.pdf
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f8880b8a6fa1.pdf
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f8e62096aa3f.pdf
    • https://ponopuxebi.weebly.com/uploads/1/3/4/3/134365602/bafar-finimeli.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sivanira/suvekeziterisu.pdf
    • https://s3.amazonaws.com/xurixado/wexedumovo.pdf
    • https://s3.amazonaws.com/jepavilutabilel/kewodebef.pdf
    • https://uploads.strikinglycdn.com/files/320a89b9-76b9-4457-a4b6-d5cc6954688c/78187545424.pdf
    • https://s3.amazonaws.com/tetazino/blender_3d_printing_tutorial.pdf
    • https://s3.amazonaws.com/xafaxotaful/androdumpper_apk_pure.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_off00009735.bin
2cccb5b41c6552a23788abc20432f1410cb579a80a791847547fff701d8e0c95
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9735 29316 bytes
font_00_sfnt_off00006573.bin
0c8ae7978e3cba0b6dc3f9d3568b7925e1a5b049673d5a12022f1d1f11530c2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6573 5032 bytes
font_01_sfnt_off00007699.bin
86f0503576e07b86b5209129edb311d89053566927669acf2e28667b944ebbc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7699 9472 bytes
font_03_sfnt_off0000c97d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xC97D 4324 bytes