Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb9f40e40a71204…

MALICIOUS

PDF

44.2 KB Created: 2020-08-01 14:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 977f2e73bc532284615798856a6de8d0 SHA-1: 1a8a98232b51c0fa8d6e6bf888cc6d1861e46c2a SHA-256: 2fb9f40e40a71204c8bbd717eabe1bc32e6cc41e9461e1a25deb3419606ff9ca
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.ru/pify?keyword=ryobi+bt3000+tablesaw' points to known malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests that the document is part of a larger effort to manipulate search engine results or distribute malicious content through a network of PDFs. No scripts were extracted, but the extensive link farm and malicious redirector strongly suggest a phishing or SEO poisoning attack.

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.ru/pify?keyword=ryobi+bt3000+tablesaw
    • http://files.tobaccofreewisconsin.org/uploads/1/3/0/9/130969452/62f2dc2523.pdf
    • http://files.marleysbeautybox.net/uploads/1/3/1/3/131384468/sazevavanav.pdf
    • http://files.soapbarlounge.com/uploads/1/3/2/6/132695405/8758677.pdf
    • http://files.calphotographs.com/uploads/1/3/1/4/131411688/b7132338ba7ee.pdf
    • http://files.ataraxiaphotography.com/uploads/1/3/1/4/131455883/jazozixure.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9601/files/98198857320.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/64326253488.pdf
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/11930740134.pdf
    • https://cdn.shopify.com/s/files/1/0435/2209/7304/files/693316129.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/dutaminipexakedoremirajav.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/xafegojat.pdf
    • https://cdn.shopify.com/s/files/1/0433/6726/8517/files/zadujunarudusasigujivi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/vepabidurijemit.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5813/files/tawategeruzeduwotobe.pdf
    • https://cdn.shopify.com/s/files/1/0428/8167/9523/files/viwofomozosusafogira.pdf
    • https://cdn.shopify.com/s/files/1/0433/2129/5003/files/sony_ericson_w580_i.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/melevotelivomudez.pdf
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/36393067185.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_off00006d41.bin
94411aaf839f65a993a32bc52079d28475fda7e47b2b89bbafcebd232aac7172
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D41 5232 bytes
font_01_sfnt_off00007f3f.bin
b8b8186ce717106375564ee52eb788c3af2ebe9bdc08c538607f87531926a8d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3F 10828 bytes