Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c25a322c0c0d300…

MALICIOUS

PDF

43.2 KB Created: 2020-08-14 22:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17ebf8b5f497651e2e070c4b77dcd66c SHA-1: d17985c39d813615f7355afdf3bc7cc794f6d41d SHA-256: 5c25a322c0c0d300f05794c871112844d3b282eacf930a70d3f88f30bae565bb
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL 'https://ttraff.cc/wb?keyword=teologi%20feminisme%20islam%20pdf' is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ttraff.cc/wb?keyword=teologi%20feminisme%20islam%20pdf
    • http://wasen.graysandbluesofmontreal.com/uploads/1/3/0/7/130776485/tekafewurujana.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/lima_barreto_biografia.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/tevasexatijolitazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8456/2084/files/93949301429.pdf
    • https://cdn.shopify.com/s/files/1/0430/7818/9205/files/6743168052.pdf
    • https://cdn.shopify.com/s/files/1/0447/0656/2201/files/women_s_bible_study_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/42959345841.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/fazogivegaki.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_off00005f62.bin
9d2b6f123eab5018e1f6effb868cb1a5d265d62f7186a48f5cec315a83e445e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F62 5216 bytes
font_01_sfnt_off0000711d.bin
4e763cd7afb6ecf8d741aa93de173d42f333c897aaf616c48651035afafba4e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x711D 15272 bytes