Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa0f856d9dee8b46…

MALICIOUS

PDF

122.9 KB Created: 2020-08-07 05:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93e54ef30806b05d47ab6dbeb358a6d4 SHA-1: c4c3fa1793e8d82caebb5e94a7524dccb0298755 SHA-256: fa0f856d9dee8b4673cee4a060b8d31a13d8125c3fb7b809dc1f0f197135b30c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with one identified as a malicious redirector. The document body, though partially corrupted, includes a URL that matches the malicious redirector. This suggests the primary purpose is to lure users to potentially harmful sites.

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=aoac+procedure+for+proximate+analysis+pdf
    • http://files.christalineadrianti.com/uploads/1/3/1/1/131164452/8581398.pdf
    • http://files.theroute92.com/uploads/1/3/1/4/131410012/3484041.pdf
    • http://bebagib.hirsigfrazier.com/uploads/1/3/1/3/131383283/lufarebitaz_tasenivi_mijupetalomawu.pdf
    • http://deditiva.bacmedicalmarketing.com/uploads/1/3/0/7/130775350/7429201.pdf
    • http://files.chasewindow.com/uploads/1/3/1/4/131452842/7becdc6edb09f62.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4736/files/85652852244.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/ancillary_justice.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/buvaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/befojizedisubexe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/ratalulalenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8837/1107/files/71436146808.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/33277971944.pdf
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/futibikuzemudosonirefe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/bajiguvogubef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzawubemamomavokam.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/fetal_development_chart_month_by_month.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/zufuxezegojopa.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_off0001a472.bin
de9be63a0e7e4e66e9a9304868d5a2cb3f127a949a575000e66a1d05a5f5b8d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A472 5460 bytes
font_01_sfnt_off0001b700.bin
7acad787a8e397917b4c67965b5acc22bc41d627c1f63fbebb48a3d1e4629155		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B700 11892 bytes

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