Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ee4c85f5bb8505…

MALICIOUS

PDF

122.3 KB Created: 2020-09-09 06:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a6ce94aa57046ff0779bd063026bccf SHA-1: 3aab8a2a738d6d25459258d7fdc4291fa8b8d45b SHA-256: 43ee4c85f5bb85056ad9e69c3779527e549ac24e34200e7a0f17da67df3be24b
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/wix?keyword=latin+vulgate+english+translation+pdf'. The document body, though heavily obfuscated, contains this URL and text related to the search query, suggesting a lure to a malicious site. The file also exhibits characteristics of a link farm, indicating a potential SEO poisoning or spamming campaign.

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/wix?keyword=latin+vulgate+english+translation+pdf
    • https://cdn.shopify.com/s/files/1/0431/0781/1482/files/sozutuxate.pdf
    • https://cdn.shopify.com/s/files/1/0435/5384/9499/files/kuvuvifibutazaxoba.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/systematic_literature_review_example_paper.pdf
    • https://static.usrfiles.com/ugd/eb6612_b1e2dc10f7d04c02b0e35a4e72f29758.pdf
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/pekowep.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/gizugewusitusuva.pdf
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/53963533348.pdf
    • https://cdn.shopify.com/s/files/1/0439/5961/5646/files/aaa_console_games_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0439/4146/2174/files/aerosmith_dream_on_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/9979/1268/files/black_demons_catacombs.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/cacing_ascaris_lumbricoides.pdf
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/minecraft_1._8._9_xray_texture_pack.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_off0001a192.bin
539dd0deb44c165a086c521f46dca05a0f90e8c6860c9fc2e37337dc7f294a15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A192 5304 bytes
font_01_sfnt_off0001b3a6.bin
09dc7d2cb7720254466b81b3e4ae0515b4dca7ee68f82ac7416bd572b1ac6f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B3A6 12344 bytes

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