Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0a7b2b3f43c4fb…

MALICIOUS

PDF

67.1 KB Created: 2020-08-29 23:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c38e89ea326f2a9addf0319fbb19a5c SHA-1: 1aa81222a8b701f50b8ede957afabdd9536065fd SHA-256: 1e0a7b2b3f43c4fb65ec6c4dd4741b5b343778c21b8be3bb9bf49f742418cb88
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=enterprise+systems+include+analytical+tools'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The presence of urgency language further supports the lure tactic.

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.ru/wix?keyword=enterprise+systems+include+analytical+tools
    • https://static.usrfiles.com/ugd/166c09_da11ef4af00d4d809a205bf9a61116e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_12648dbf70914405acc7e1efd1e0c3a8.pdf
    • https://static.usrfiles.com/ugd/912de2_1e2c07667fe4410f958c700b11954c0e.pdf
    • https://static.usrfiles.com/ugd/7f46b5_1128e1da047246cf8db7158fa1a59f07.pdf
    • https://static.usrfiles.com/ugd/b8c837_947eab0c829a4592a34ce21e14ef09e8.pdf
    • https://static.usrfiles.com/ugd/7ff653_956cdf4529a741ea938dfac177e3987a.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/zosefug.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/53747149784.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/creating_methods_in_java.pdf
    • https://static.usrfiles.com/ugd/b8c837_658a91e6d12544a3b1221d2717d0980e.pdf
    • https://static.usrfiles.com/ugd/b8c837_574a705aa07d4f799105fe34f2ab17ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_95c46a28cc36419e8c1291fe0b73c830.pdf
    • https://static.usrfiles.com/ugd/b8c837_33e26a5e05e44935a143d4af544fb78c.pdf
    • https://static.usrfiles.com/ugd/b8c837_14a25d68ba944863b75be45b38f4838e.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_off0000c86f.bin
ede1436b7da050378de1da09f1d378e8644e62a4eb5ff614f6de2591389bad54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC86F 5276 bytes
font_01_sfnt_off0000da49.bin
4c0b3c623bed43c62b233a75c25a71c84eb420553601432920b9c96888073cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA49 10792 bytes

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