Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c5f29a223cd198…

MALICIOUS

PDF

47.8 KB Created: 2020-08-17 09:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e89618f533dea2f5d7c82304043f336c SHA-1: c1775bc09e1b8722c97a0b261c92ed462d5e4091 SHA-256: c5c5f29a223cd19870764ee36936542ec2c48d815276b8b87388d1fa9824851e
130 Risk Score

Malware Insights

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

The PDF file contains embedded links that lead to a known malicious redirector. The document body text, though heavily obfuscated, suggests a lure related to loan payments or promissory notes, aligning with the 'SE_INVOICE_LURE' heuristic. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=loan+payment+promissory+note+template
    • http://vixeg.roadrunningrules.com/uploads/1/3/0/7/130739704/8500381.pdf
    • http://malexo.murphybedsetc.com/uploads/1/3/1/8/131871433/mimimifiju_vagafupib.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/98712295684.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/zafibufuzuguwokosalexebiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/40723631265.pdf
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/junelinedupepizasorezili.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/folura.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/17104747201.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/kagedegikineme.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/jarudiziwox.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/gazopinoxebigowowimudijud.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_off00007d87.bin
5d13940cd95d935606b76de0c22d10014b6ad6e8da1ccd1c17f4a57bb1285231		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D87 5008 bytes
font_01_sfnt_off00008e80.bin
916bcae7e6d26a78e81a5016d9c98203a995fc56ad21ab9560b7b328f2a067c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E80 10512 bytes

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