Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ac73a15b36fff8…

MALICIOUS

PDF

178.4 KB Created: 2020-09-11 13:24:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0dc67d081aa5f3513fbf67ae25447dec SHA-1: b0aa088cf282a1038b948f161fea1a2cf21fa76c SHA-256: 23ac73a15b36fff86d03400a1b4e3094a823f72bed69534b10853c063cadbbef
68 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=esophageal+varices+guidelines+aasld'. This indicates the document is designed to lure users to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. No scripts were extracted from this sample, limiting further analysis of its payload.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.club/pify?keyword=esophageal+varices+guidelines+aasld
    • http://files.planningprotocol2.com/uploads/1/3/2/6/132682042/jotanufag-sivonajupi-jasowir-nexefupowudebu.pdf
    • http://files.ktrpo.com/uploads/1/3/0/8/130874615/dbc2e6e3e2a.pdf
    • http://mofobu.heathcotehousenursery.co.uk/uploads/1/3/0/9/130969685/731271.pdf
    • http://files.ladyannestrunkomaha.com/uploads/1/3/1/6/131636807/588a702b235eda.pdf
    • http://files.mindgility.co/uploads/1/3/0/7/130739892/ae28b6676629.pdf
    • http://files.alieninvasionmusic.club/uploads/1/3/0/7/130776223/3621595.pdf
    • http://rudinex.inspiredbygeology.com/uploads/1/3/1/4/131453133/e23bb341df.pdf
    • http://files.forksandblooms.com/uploads/1/3/1/6/131606875/da5659252187798.pdf
    • https://static.usrfiles.com/ugd/d51d36_d6ce8b93c0b2403d969aa2fab0dc79a3.pdf
    • https://static.usrfiles.com/ugd/72b0e7_775c65a3908c448598b88d435bc19d5d.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/dononegasaro.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/19363335498.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7809/files/weruvu.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_off00026072.bin
9cfc181be1a1bc68964ef7f46ec2eeb5c72099cf3f55770ecc07d317d1c29213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26072 5352 bytes
font_01_sfnt_off000272ab.bin
2eb74a559301aecb40cfc55eea3725077876ec0f431863d27ff6258dacea03dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x272AB 17096 bytes
font_02_sfnt_off0002a750.bin
2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A750 16060 bytes

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