Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef2da0ad1823298…

MALICIOUS

PDF

68.4 KB Created: 2020-08-30 21:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cd66978aabc002177ff08ca795ede48 SHA-1: 16d958aaa993e64546f93035b49bca36021db466 SHA-256: 9ef2da0ad18232984cf85ac59db23e1ed751dd2c1f5c1ede6c6d0ce154c529d7
120 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 'ttraff.com'. This indicates the document is designed to lure users to a potentially harmful website. The presence of numerous other PDF links, while some are benign, suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted, and the document body is heavily obfuscated.

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.com/wix?keyword=n%25C3%25A4stan+yttrandefrihet+v%25C3%25A4rd
    • https://static.usrfiles.com/ugd/b8c837_9af6a01153da4800bb69aa80a8cf6f5b.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7e32b66f6294d6b98eaf0221bf5f332.pdf
    • https://static.usrfiles.com/ugd/3f4b99_5dfc5b716451400b9804427aed945380.pdf
    • https://static.usrfiles.com/ugd/b8c837_c97d650ad7d44f28b86e8513a051f3d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb7b9ff53afe4665843893c2008d0bbc.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/nirvana_heart_shaped_box_tab.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/81132434594.pdf
    • https://cdn.shopify.com/s/files/1/0461/7466/6905/files/zojivefevalopolazarigife.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3554/files/programme_musculation_3_fois_par_semaine.pdf
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/73689496151.pdf
    • https://cdn.shopify.com/s/files/1/0440/1178/2309/files/51975579711.pdf
    • https://cdn.shopify.com/s/files/1/0429/0409/2828/files/limiting_adjectives_worksheets.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_off0000b3d2.bin
e85c39836c3b6f5ae1f1e2dc77cb37431b9c24a678320eb09e8f039fac00a267		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D2 5328 bytes
font_01_sfnt_off0000c56c.bin
e373f473cd67d77ffc595fbad33e48a0ba27c161d63c154efb4c5c7c1a8399f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC56C 12140 bytes
font_02_sfnt_off0000ec7b.bin
bf92ca42920aed1ed6abdcc34504301e492fa5238eacae64ffb3cf5f25170504		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7B 16316 bytes

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