Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b06d1863e224bcc…

MALICIOUS

PDF

61.9 KB Created: 2020-07-30 09:16:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5addf3148878b0cf829b957dd8be351c SHA-1: 8a5d26fb372765fb64f9b3dac63014bc7f0e56ac SHA-256: 9b06d1863e224bcc8c1616817b3e0df2e9be7dc207e31ddf2353fad8760537f9
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', and another for a large number of external PDF links, suggesting a link farm or distribution mechanism. While no scripts were extracted, the presence of a 'download button' lure and the redirector URL indicate a likely attempt to trick the user into downloading a secondary payload. The document body is heavily obfuscated, preventing a more detailed analysis of its specific content beyond the title.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=catalogue+cadivi+pdf
    • http://files.geraldinecreed.com/uploads/1/3/1/4/131453843/gawasiru.pdf
    • http://files.smallcoffee.ca/uploads/1/3/0/9/130969809/1436842.pdf
    • http://files.cliftonclimateaction.org/uploads/1/3/2/3/132302919/jawalugisoruwiled.pdf
    • http://files.divinewordseminary-riverside.com/uploads/1/3/1/4/131438448/futewaluzunufiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/figotezonegimevopixija.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/77430282542.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/kodejagitaridefedagoluvop.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/92125332275.pdf
    • https://cdn.shopify.com/s/files/1/0439/3808/7070/files/pumunerawexikoli.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/kiligemogazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4647/7722/files/boruzazonexi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/gowufibijode.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/11342194411.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/22673366721.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/73476444529.pdf
    • https://cdn.shopify.com/s/files/1/0432/8449/6550/files/3346911075.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_off0000a1e9.bin
1d91ecbb35a831cfad5172c59fa4b0438d8449959803d8110bfa29282f9e0f86
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E9 4908 bytes
font_01_sfnt_off0000b2c0.bin
64b358490a6d4fdf9720d8dbb28c21bbc14a96f5ba3c450401cb4660f39ee7be
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2C0 22664 bytes