Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0c85b9b3bd98c23…

MALICIOUS

PDF

43.7 KB Created: 2020-08-01 07:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57549e47f4e15c592d0473ed6407c7c4 SHA-1: 777456ea3ffd29961d03da8761f1b941ae8b0c74 SHA-256: a0c85b9b3bd98c2376d92b8cea9ce0e32c19ff9033b5ce008a693b81c6d5a4d2
120 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam or redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at `ttraff.cc`. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it's the primary lure. The file's structure and the presence of many external links point towards a phishing or redirection attack.

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.cc/pify?keyword=night+lord+skill+build
    • http://files.theteamvision.net/uploads/1/3/2/6/132682905/9726277.pdf
    • http://files.turncoatmenswear.com/uploads/1/3/0/7/130738943/144730f58e7624.pdf
    • http://files.prbcbwk.org/uploads/1/3/1/0/131070604/44ea73fdd9049f.pdf
    • http://files.charmantconnect.com/uploads/1/3/1/6/131636654/vifot.pdf
    • http://files.therockprefabgranite.com/uploads/1/3/1/4/131453588/e406facb99f6.pdf
    • http://files.therockprefabgranite.com/uploads/1/3/1/4/131453588/e406facb99f6
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zebegevuda.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/9151878541.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/xelilefike.pdf
    • https://cdn.shopify.com/s/files/1/0430/7245/4807/files/28898986602.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/gavab.pdf
    • https://cdn.shopify.com/s/files/1/0432/3501/6863/files/38925097417.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/48377810752.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/16744134643.pdf
    • https://cdn.shopify.com/s/files/1/0428/7299/5996/files/old_rv_owners_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/rimivogojeruxubap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/sogofumuwokiwa.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d1e.bin
eb4037b758cf499eed93b752bf90de7479363453458be3a7a81623e4c991debd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1E 5052 bytes
font_01_sfnt_off00007e4a.bin
e1448b18406c3b6e6658b80fae4718f2bc0e3856727bf037c44b8b117c8478a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4A 10364 bytes