Malicious PDF — malware analysis report

Static analysis result for SHA-256 2099853c240c6b8a…

MALICIOUS

PDF

47.4 KB Created: 2020-08-11 09:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8098655d91c88e00a3279564adf8a637 SHA-1: cf2a3925437006125a30ff764ecee17c7b651fd6 SHA-256: 2099853c240c6b8ab292482933654a75d503815a7d4df06632ad62f6f4437e98
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious content. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, reinforcing the attack pattern.

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=cessna+172+fsx+checklist+pdf
    • http://nofenipa.tourputtingcoach.com/uploads/1/3/1/4/131483337/93c98482078e4.pdf
    • http://files.fbcwaycrossyouth.com/uploads/1/3/2/3/132302802/bupetov.pdf
    • http://files.abbotstones.co.uk/uploads/1/3/0/8/130874012/d2320.pdf
    • http://files.nomadwill.com/uploads/1/3/1/4/131437584/9681cc76464.pdf
    • http://files.artisanclayflowers.com/uploads/1/3/1/4/131437978/33726.pdf
    • https://cdn.shopify.com/s/files/1/0437/4586/9985/files/56358055957.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/xaduko.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2103/files/47688537129.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/zisaxuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/wususuvevifelapulodizosam.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3959/files/xufizowu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/68540954385.pdf
    • https://cdn.shopify.com/s/files/1/0429/2611/2927/files/couper_en_plusieurs_pages.pdf
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/microsoft_sql_command.pdf
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/jadizomoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/3251041492.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de2.bin
382bfb84b9e740e108abab60208f8c0ece8b466e5dedb463292c7f387aab2962		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE2 5244 bytes
font_01_sfnt_off00007fc4.bin
e8f40f7bcecb15818aa7d688cf9dc6dc464667d4dd92297c930606d77924fa93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC4 10244 bytes
font_02_sfnt_off0000a2ba.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BA 4324 bytes

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