Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d00a62a4dfb1be…

MALICIOUS

PDF

36.7 KB Created: 2020-10-26 19:43:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa0d6868389e756a098b10484f7c9bec SHA-1: ec994de9e89a2355d4390f6f715418616946f2bc SHA-256: 05d00a62a4dfb1beda4220613dc83d1dc8ce8329338d12586480e99cdd3afb5e
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://gettraff.ru/123?keyword=dexflex+comfort+shoes+canada`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to trick the user into visiting this malicious site. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for a phishing attempt.

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/123?keyword=dexflex+comfort+shoes+canada
    • https://nelibijejukeli.weebly.com/uploads/1/3/1/4/131437261/rowavivadepimuse.pdf
    • https://wuwenivavubujer.weebly.com/uploads/1/3/1/4/131437756/5956892.pdf
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f875fc94ca72.pdf
    • https://cdn-cms.f-static.net/uploads/4376866/normal_5f8b95c393bef.pdf
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5f96e52b8ec18.pdf
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f8bee8a7f289.pdf
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f88d771cbd2b.pdf
    • https://jigusamimuwu.weebly.com/uploads/1/3/4/4/134435445/nilavi.pdf
    • https://luwamagol.weebly.com/uploads/1/3/4/3/134375262/ccadb189e66fa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rozebofukixus/symmetry_breaking.pdf
    • https://s3.amazonaws.com/mijedusovineti/vuxudavavunurokuw.pdf
    • https://s3.amazonaws.com/zirojopemup/advanced_level_english_stories.pdf
    • https://s3.amazonaws.com/pazifetanegapu/dawiwetuwuzuwa.pdf
    • https://s3.amazonaws.com/wonoti/beltrami_county_jail_roster.pdf
    • https://s3.amazonaws.com/tonemakopinibem/active_learning_methods.pdf
    • https://s3.amazonaws.com/felasorarabipis/art_and_answerability_bakhtin.pdf
    • https://uploads.strikinglycdn.com/files/5048f452-a583-46c7-8d1e-a7d913500ba7/art_history_timeline.pdf
    • https://uploads.strikinglycdn.com/files/c4e0dd4a-d1a3-477f-b617-c03e252e1f11/5779487451.pdf
    • https://uploads.strikinglycdn.com/files/0211a765-80e6-48f1-a2d1-4a9a366dd9a0/44784953921.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f03.bin
f3f46d05ff774923915e5c5a6d79b16001e6c1184892bd44e54f17821134cf48
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F03 5328 bytes
font_01_sfnt_off00006100.bin
a3807b5db3dbb76c564ec89d44f36cf97514bae224085e1e22ddd3d1bb0c38b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 10848 bytes