Malicious PDF — malware analysis report

Static analysis result for SHA-256 3947c7c3f6e34277…

MALICIOUS

PDF

97.7 KB Created: 2020-10-31 12:33:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deb96ba72bf5c6e2f7942cfedc35bb43 SHA-1: 6f1f7b8928a36ae4727067d8b2d682342da4bf63 SHA-256: 3947c7c3f6e34277a1655f35ebec7047835a22662f1d2c9a818486623693dd3f
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The embedded document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The ML classifier also strongly flagged this PDF as malicious. The presence of this URL indicates an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

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://ggtraff.ru/aws?keyword=wow+death+knight+leveling+guide
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/binadubedexoxizij.pdf
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/kudibaripesevomiki.pdf
    • https://bupifepubeweta.weebly.com/uploads/1/3/4/3/134336259/suriwekama.pdf
    • https://cdn-cms.f-static.net/uploads/4383314/normal_5f8bf99fc8d71.pdf
    • https://kilunifogewawo.weebly.com/uploads/1/3/4/4/134457757/2378632.pdf
    • https://tevitoretej.weebly.com/uploads/1/3/2/6/132680933/ffb83b25e32c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0501/8232/4379/files/wd_elements_6tb_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/5c90d8db-8537-4087-a946-eb4ea04a2534/83101114192.pdf
    • https://s3.amazonaws.com/rodigapigeta/caspi_et_al_2002.pdf
    • https://uploads.strikinglycdn.com/files/658dee6a-a71d-41fd-b246-8099725d6a9d/96184101226.pdf
    • https://s3.amazonaws.com/pasawexawinogad/xuwoludowexugizufop.pdf
    • https://s3.amazonaws.com/sazixipame/36064010292.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012aaf.bin
b87a5e9fe0a68c992901406c7ae7bc9252ad416757b3c72513cbb896f0ea5da8
pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAF 4924 bytes
font_01_sfnt_off00013b84.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x13B84 1800 bytes
font_02_sfnt_off00014414.bin
42b66b7c3fcbcc5f25c68752d63e723eaf2414d49ea340479da6414ffdebed1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x14414 11344 bytes
font_03_sfnt_off00016aa9.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x16AA9 4324 bytes