Malicious PDF — malware analysis report

Static analysis result for SHA-256 8432b7a773e113da…

MALICIOUS

PDF

38.0 KB Created: 2020-08-05 22:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be66c022906f1f0b6e7b93ebc903a1ab SHA-1: 86b25eed469f07d1542b0cd38026506cd657c8f6 SHA-256: 8432b7a773e113daeb859636cf3e2c474b7703cb11c6205239d6b79cb2695ae3
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', disguised with a Wetherspoons menu keyword. It also exhibits a PDF link farm pattern, with numerous links to Shopify-hosted PDFs. The ML classifier strongly indicates maliciousness. The embedded URL 'https://ttraff.com/pify?keyword=wetherspoons+full+menu+pdf' is the primary indicator of a phishing or malware distribution 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.
  • 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/pify?keyword=wetherspoons+full+menu+pdf
    • http://files.centralfloridadressage.com/uploads/1/3/1/6/131606150/9584205.pdf
    • http://files.maxeyshouse.com/uploads/1/3/0/8/130874189/e7dc9d8.pdf
    • http://files.beasleydoodles.net/uploads/1/3/1/3/131398547/lasejofadezi.pdf
    • http://files.nrchemistry.com/uploads/1/3/2/6/132681783/diloxevixofije_vusaxuletazez.pdf
    • http://files.warbabycosmetics.com/uploads/1/3/0/7/130776599/rokototeto.pdf
    • http://files.centralfloridadressage.com/uploads/1/3/1/6/131606150/
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/sjogren_syndrome_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/manatawike.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/28083658265.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/logosami.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0436/8121/8710/files/rulidivijumu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/bacterial_cell_membrane.pdf
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/50250065564.pdf
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/78162646699.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/fegokovisopigudifukew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/suxuteregejo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/voriwazikevamapaziru.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_off00005719.bin
23213b19943efcc420846b958c2222411c893a71f316b591e896e4b5676d0373
pdf-font-stream PDF embedded font (sfnt) at offset 0x5719 5084 bytes
font_01_sfnt_off00006849.bin
1f83111a23309c6d8db2c78f864f9b87015189056bafde66807b921d1a5007f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6849 10116 bytes