Malicious PDF — malware analysis report

Static analysis result for SHA-256 90b88a194cda6062…

MALICIOUS

PDF

37.8 KB Created: 2020-08-31 11:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4bef93ede33781e66b12d560f1441cd SHA-1: 2ad6990222b602f4929566acbd310ca879a82c29 SHA-256: 90b88a194cda606254efc28725ed2a7dbdf79cae750967fa0569bebbf5884c82
128 Risk Score

Malware Insights

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

The PDF was identified as a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=environment+9th+edition'. It also contains a large farm of external PDF links, with the first identified as 'https://static.usrfiles.com/ugd/9ea9b6_e5b3c459b48d498c8476ee84f1d599be.pdf'. The document body contains garbled text but includes the same redirect URL, suggesting a lure to external content. The presence of numerous links and a malicious redirector indicates a likely attempt to lead users to malicious sites.

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.
  • 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.me/wix?keyword=environment+9th+edition
    • https://static.usrfiles.com/ugd/9ea9b6_e5b3c459b48d498c8476ee84f1d599be.pdf
    • https://static.usrfiles.com/ugd/b8c837_40b0e2f330ed48b687c04fd0fa65e47c.pdf
    • https://static.usrfiles.com/ugd/a18aa6_87d97cb5633149f5a26a8dbdce13900e.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a87d4cc30eb49c3b2bcdcdcc9fcc668.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e34c66d08774e7887b22592ed906c54.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e844fd66b614d48941a244671bb6e6c.pdf
    • https://static.usrfiles.com/ugd/a4d998_8150eee383eb488ea1034c0245ca3507.pdf
    • https://static.usrfiles.com/ugd/de65f7_2d412151aebe4c7eaae522020b594be7.pdf
    • https://static.usrfiles.com/ugd/b8c837_114e5d7d0dcc4541a4bc9ba8b55104f5.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/trouble_in_terrorist_town_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3199/files/mefolekenire.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_off000057b3.bin
0eac92e37e0ec677aec0ee65f41a06adeea965ede37f59cf8e37c721eb55ba71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B3 4820 bytes
font_01_sfnt_off000067ef.bin
031f1b46672e35f38b24d6edb6bb834ebd79a92b16d59df179c27928ecce343e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 10256 bytes

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