Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd257083440b48c9…

MALICIOUS

PDF

65.8 KB Created: 2020-08-23 19:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f93ac4f137994c3b58ebeb146f72573 SHA-1: 4595422fc1a2b2b53783bb3238198e794e28b013 SHA-256: fd257083440b48c93dbf6696106f9892d47a4e1b7b51560ea141f1d624eed0e9
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=ethiopian+economic+report'. The document body, though heavily obfuscated, contains this same URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous external PDF links, indicating a potential attempt to game search engine results or distribute further malicious content. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of a phishing or redirection attack.

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.cc/pify?keyword=ethiopian+economic+report
    • http://deluzel.detroitlakesucc.org/uploads/1/3/0/7/130740145/titef_ruzabotatakaka_sizuta.pdf
    • http://files.disfrutaelmundo.com/uploads/1/3/1/4/131406649/692409.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/after_effects_loop.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/selino.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/66580035505.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/42743653602.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/mibivofosemijipawetolozov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0800/8090/files/33859891478.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/appraisal_templates_uk.pdf
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/13357219173.pdf
    • https://cdn.shopify.com/s/files/1/0434/2933/1100/files/12830780343.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/79822573070.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4229/files/95260648506.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_off0000a613.bin
3bb1ef29e302b463384b3192225ba36ba58084b0d248071aed044ae225d188dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA613 6964 bytes
font_01_sfnt_off0000b7b6.bin
ea9bab1e349d81d7d5dfa58ea08c39a9132be08374c937c706db8f56cf9387da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7B6 4920 bytes
font_02_sfnt_off0000c844.bin
0d913a1ae29e2ea2e08d7a7aaa2f638ab068d6e6d950b3b3b7f059c2f6926b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC844 15176 bytes

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