Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0977a19bca90aa7…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 07:30:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e5296d7ab765f4ea11581fc5c8b5adf SHA-1: 56677778ee5c531db62d8fb6e00e7b42ec00d9fb SHA-256: e0977a19bca90aa7c470836687c6688cf317966456d2009a5024d11d2eb85deb
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links. One critical heuristic firing indicates a PDF link to known malicious redirector infrastructure at 'ttraff.ru'. Another critical heuristic firing flags the document as a PDF SEO link farm, with numerous links pointing to Shopify domains, including 'cdn.shopify.com/s/files/1/0429/9502/4033/files/anatoly_t_fomenko.pdf'. The document body contains garbled text but also includes the suspicious URL and several Shopify URLs, reinforcing the link farm observation. The primary intent appears to be SEO manipulation or distribution of further malicious content via the link farm.

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/wix?keyword=sto+phaser+sets
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/anatoly_t_fomenko.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/retusuden.pdf
    • https://cdn.shopify.com/s/files/1/0435/5365/2895/files/ti_paper_trail_zip.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/boxugeron.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/uc_browser_pro_apk_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/hitchhiker_s_guide_poster.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/79925165260.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/dota2_invoker_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/rodigimonabuzubejamax.pdf
    • https://cdn.shopify.com/s/files/1/0428/7122/6534/files/attestation_d_employeur_web_destine__ple_emploi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/bugs_bunny_game_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/bd_cytometer_setup_and_tracking_application_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/lvoa-c_bad_news.pdf
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/parental_advisory_logo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48465164240.pdf
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/nutanoxopiwodadimivuf.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_off00006c66.bin
da953db3083acbfcd948e6a5ad0b8b5eb29a750204f4f782dfbc86b8823f0c97
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C66 4976 bytes
font_01_sfnt_off00007d48.bin
1d772c911d04d03d4cb180a76e2d4dab5f334cac7ded62f4905f8b78ed4b5491
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D48 11084 bytes