Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d410d3bd9c9b50…

MALICIOUS

PDF

41.0 KB Created: 2020-08-25 09:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8036c5b079e71b6d7693a5e210dd5abb SHA-1: db611774efd386761aaea1d9e819bcc5891a812c SHA-256: f0d410d3bd9c9b5054167bd26fc0e337ebada796def7bc813935d3be46f6a9cc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=application+format+for+teaching+job+in+college'. This URL is embedded within the document body, disguised as a job application format. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The primary malicious IOC is the redirector URL.

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=application+format+for+teaching+job+in+college
    • http://xivovum.triplecrownlacrosse.com/uploads/1/3/1/4/131453558/detax.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/volus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/vojorudoduwedizomowawid.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/guidelines_ventral_hernia_repair.pdf
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/13119165546.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/11057980353.pdf
    • https://cdn.shopify.com/s/files/1/0438/2982/1597/files/kelas_gastropoda.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0577/files/50275292177.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/25962779597.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/xobofinij.pdf
    • https://cdn.shopify.com/s/files/1/0465/8806/8005/files/badmaash_company_full_hd_movie_filmywap.pdf
    • https://cdn.shopify.com/s/files/1/0434/2962/6017/files/xusonirofozogulu.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_off000062dd.bin
cb086dbcbc982d74bce13beaab9bf83d00c627d0b0676da5996e28d459e18d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DD 5456 bytes
font_01_sfnt_off00007540.bin
a11dabbfd78a8442088ee89d0f1990c303809a2d69e7c9bd30862351f2931322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7540 9948 bytes

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