Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5fd44da4018e844…

MALICIOUS

PDF

45.4 KB Created: 2020-08-29 21:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75654c78bde9a288ed7fd27688e05a91 SHA-1: acf4c87d188609743c192f05f5cb3f26490c4650 SHA-256: b5fd44da4018e8445ced8fb0d5e7ddc49ff46e0ab03748ae307e4bc56217bf6f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a manual. This suggests a phishing or malware distribution attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to improve search engine ranking for malicious content or to obscure the primary malicious destination. No scripts were extracted from this sample.

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.ru/wix?keyword=artsoft+lazycam+manual
    • https://static.usrfiles.com/ugd/b8c837_6b08c57c3f46452da91f1e46197179dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_441e3a808b99455dab9bd83af84f3a4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2fb51372f29401490b51c546366477a.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/mufivesidoperugutew.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f231ca35e694daebc2b269ffb1be25c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa031943cc14e4887eb4feb4f9d60d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_66775c8e62984023ab82d7d576558559.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cd3d2001f3f4b24a3b17dcfecd18bb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_31e591a6907047dc93217a5834b16001.pdf
    • https://static.usrfiles.com/ugd/bf650e_e75453b1d06c42dda19ddb3f737a05dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ae98099124d4e1a86b3c9530ce728b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_85da2e815a04463ca0461b7aa322d485.pdf
    • https://static.usrfiles.com/ugd/b8c837_11de0c5dc2014f0196e3ad40bd25b310.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_off000065d6.bin
43b1d6b2246b4b1c84975658977cc8b36b1ee18dea1c5659c0d329851ea4844a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D6 4884 bytes
font_01_sfnt_off0000765f.bin
bd3dd1b4d2c6b808462db0a6c18710a9f7eb9f30d0c76fee388b88044dedad72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765F 10828 bytes
font_02_sfnt_off00009aef.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AEF 4324 bytes

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