Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa9cfab1e68b3221…

MALICIOUS

PDF

37.6 KB Created: 2020-09-26 17:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0367f1816c3ac453d3e60760ba59f4f3 SHA-1: a62159ec4c38b1b03c70d9469371839008f383f9 SHA-256: aa9cfab1e68b32210a76d28b2984b7f2b273d9721687532ecd549438394ecbb7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One prominent URL, https://ttraff.com/wb?keyword=forest%20lawn%20memorial%20gardens%20meridian%20ms, is identified as a malicious redirector. The document body, though heavily obfuscated, contains similar URLs, reinforcing the malicious redirection attempt. No scripts were extracted from this sample.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.com/wb?keyword=forest%20lawn%20memorial%20gardens%20meridian%20ms
    • http://files.meanderingjourney.com/uploads/1/3/2/6/132680853/nekageziju.pdf
    • http://files.lynnegobioff.com/uploads/1/3/0/7/130776502/koribuzisub-wupajedovux-busaruwimem-degonikilokelol.pdf
    • http://meriza.mcgrathirishdancers.com/uploads/1/3/0/7/130738914/xufaduduvazibikegi.pdf
    • http://files.teenpaddle.com/uploads/1/3/2/7/132710603/mutexi_gepixubav.pdf
    • http://fodeti.nigelgorskiconsulting.co.uk/uploads/1/3/0/7/130775565/7805eb6002.pdf
    • http://files.hairgonerogue.com/uploads/1/3/0/9/130969211/cc02211d3f87c19.pdf
    • http://veteji.pandawelding.com/uploads/1/3/2/6/132681443/7924456.pdf
    • http://temelu.christopherround.com/uploads/1/3/1/6/131607062/b6c204fb9ad072.pdf
    • http://pikoles.yogasoleil.net/uploads/1/3/0/7/130775198/c53d6dc92b6d3.pdf
    • http://fagabeje.angelomenezes.com/uploads/1/3/0/7/130775990/didivo.pdf
    • http://files.worthingexcelsior.co.uk/uploads/1/3/2/6/132696512/005bdd.pdf
    • http://kegezi.racheljeffery.com/uploads/1/3/2/7/132740478/2bbb1c8c8c95f.pdf
    • http://files.brysonfinney.com/uploads/1/3/2/8/132815903/387d3416de5e45.pdf
    • https://22d4760d-0511-4e42-a791-fdff23529de6.filesusr.com/ugd/035627_7ce75505a5b14889a45632d0461b0330.pdf?index=true
    • https://db58a6a0-6ff4-499d-80ec-dea5386fbbff.filesusr.com/ugd/3225da_9ae6e92044654c36ab2395bd1f33855c.pdf?index=true
    • https://a62bc45e-2623-48b4-a1ba-07c2c2472853.filesusr.com/ugd/a6e5e9_4307493464424905b07cf88300d74142.pdf?index=true
    • 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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004897.bin
04dfcd21aa53242c08f9d6fab5f3be6b41d9c3f6ac095f895896b0c7f3a4ca87
pdf-font-stream PDF embedded font (sfnt) at offset 0x4897 4980 bytes
font_01_sfnt_off0000597c.bin
e57dc524fd14041266e7a0fd86f122de6998b30ec2cf2be385765d4d7ee61355
pdf-font-stream PDF embedded font (sfnt) at offset 0x597C 9916 bytes
font_02_sfnt_off00007b76.bin
ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B76 4324 bytes