Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d45b9752863a16…

MALICIOUS

PDF

43.8 KB Created: 2020-09-01 11:34:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0cd515cc535a93b436fd57928b3c5c8 SHA-1: e80cfb885c38dead2001d4f3e5ffaab1ae31def0 SHA-256: 50d45b9752863a164265383a1b105c2e888dc4df9db18f452023e513e07662c8
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a significant number of which point to a link farm. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=rap+artist+bio+sample+pdf'. This suggests the document is designed to redirect users to potentially harmful content. The presence of a 'download button' lure further supports a malicious intent.

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.cc/pify?keyword=rap+artist+bio+sample+pdf
    • https://static.usrfiles.com/ugd/b8c837_f85d765a816a4ec080ce057d9bc9f162.pdf
    • https://static.usrfiles.com/ugd/ee6770_55f0a640e89946c5bf355f79f22053fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_0eb0e77a0ce34d7fbf99dfe246adae0b.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_6f2e0611d2484de6805d16aa5bfaa804.pdf
    • https://static.usrfiles.com/ugd/6c98bc_12294e6181484a38aeb3228c04a85698.pdf
    • https://static.usrfiles.com/ugd/158fb9_bc41ac6ff40c4bcd8a9ecdf1cdc8650d.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/lake_bogue_homa_fishing_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/tetaloturuzinutadap.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6145/files/video_editor_program.pdf
    • https://cdn.shopify.com/s/files/1/0432/8230/1094/files/rikobadajujajuvaniv.pdf
    • https://cdn.shopify.com/s/files/1/0463/0236/3808/files/ximufe.pdf
    • https://cdn.shopify.com/s/files/1/0440/3327/8102/files/anaerobic_threshold.pdf
    • https://cdn.shopify.com/s/files/1/0433/8371/8042/files/75427390063.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/perianal_abscess.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_off000061e9.bin
f12e0cf832d3986f0d0f66e7051696dc1a1f5dbbef67ec5fb8f1cb214c1b7124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 5332 bytes
font_01_sfnt_off000073f0.bin
4d2b2ac3681fd798b5c870086483cf3414ca51f65f1b168323ed24bc481b3d28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F0 15204 bytes

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