Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f25450906dc427…

MALICIOUS

PDF

43.4 KB Created: 2020-08-30 17:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 853d45a9a7d1038b183b8a81ce0baf38 SHA-1: 1259a3636d2bf65f3efc6d2ce96e524baeea8c78 SHA-256: 46f25450906dc4279c8068ae0fe827fb6a41d9425c133536d2566f7a8ac42503
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/wix?keyword=andreuccio+da+perugia+riassunto'. The document body, though heavily obfuscated, contains text related to the URL's keyword, suggesting a social engineering lure. The presence of a link farm further indicates malicious intent, likely to drive traffic to malicious sites.

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=andreuccio+da+perugia+riassunto
    • https://static.usrfiles.com/ugd/a4e402_d18563a14a8846b3a0f59d47e275b269.pdf
    • https://static.usrfiles.com/ugd/516793_bcb655f5c68a4da594a731630324ae01.pdf
    • https://static.usrfiles.com/ugd/b8c837_62f5b332f0244a48abd39227e27f300f.pdf
    • https://static.usrfiles.com/ugd/b8c837_0775ccb3b10543b584732e3dc8571d0a.pdf
    • https://static.usrfiles.com/ugd/f0f215_37c07bc72c1f49b19e1d671cfc5c8950.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b9369de28884babb502e35e5b2e1cb9.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc0c4db397c340528d5172c59936b4ea.pdf
    • https://static.usrfiles.com/ugd/4dd980_110b61e9661b452ea3b13f14e83341c5.pdf
    • https://static.usrfiles.com/ugd/544c7e_d9c13ad0b7e34b3fad79af2bcd1ff8d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_708fe6c2d1b544dd839c8f4c871f41a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e75fb7ffeecc407a85592424d02bffef.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_off00005f02.bin
fec8e7c972e0f5116f64f7e277daa1dd4b40149f2b9a78eb78e80c42bea0ac93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F02 5080 bytes
font_01_sfnt_off00007044.bin
7ac386ef7b12e32ce6003defe5f7e26a8a195f5bb38b53ae3ff69d33b3dc7a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7044 10720 bytes
font_02_sfnt_off0000931b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x931B 4324 bytes

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