Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4773478892b8282…

MALICIOUS

PDF

111.8 KB Created: 2020-09-12 07:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e226f9e54727306f7f735ee9183b0ac SHA-1: b885ea589010c4a631217765be7f81ff8b2c5828 SHA-256: d4773478892b828237d59dd028d8438368b04e7c357786ddbe933ceebed25f4b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=excel+vba+current+date+time+format'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO-based malicious distribution effort. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of malicious intent.

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.club/pify?keyword=excel+vba+current+date+time+format
    • http://nezisike.neurology-u-tokyo.com/uploads/1/3/1/4/131437604/6311767.pdf
    • http://files.delamare-photography.co.uk/uploads/1/3/2/6/132681536/movuw.pdf
    • http://files.studioafrolatino.com/uploads/1/3/1/8/131857445/cee76309419.pdf
    • http://files.msumc.net/uploads/1/3/1/3/131380687/dofetasusaw.pdf
    • http://vurukurak.staceykennellynester.com/uploads/1/3/1/4/131437607/mobadiro.pdf
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdf
    • http://seriwe.huffmansflowersofthefield.com/uploads/1/3/0/7/130739892/jopegutoro.pdf
    • https://static.usrfiles.com/ugd/5a4aad_283dea2d838a4ff68a4ef04e5c5f3b73.pdf
    • https://static.usrfiles.com/ugd/a891c0_3282a8d128d14835847e49b02f56ecc6.pdf
    • https://static.usrfiles.com/ugd/8716ab_e3c224e29aa74aca84fa0f8d5667be17.pdf
    • https://static.usrfiles.com/ugd/34e21e_75f8057788ae47d2afe356ce8b047dca.pdf
    • https://cdn.shopify.com/s/files/1/0463/6816/1953/files/41st_kennedy_center_honors_performances.pdf
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/donkey_kong_country_3_roms.pdf
    • https://cdn.shopify.com/s/files/1/0458/0881/2198/files/11890211445.pdf
    • http://www.mvps.org/dmcritchie/excel/datetime.htm
    • http://www.mvps.org/dmcritchi
    • 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_off00016870.bin
74d0dcc1e7a9ab7ce593da94813354477ec58562e38dfb3ed2b65dbb6628c46a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16870 5216 bytes
font_01_sfnt_off00017a25.bin
bac3b65b40fa5b5b78c1a51af4c3331a16ef5dc6790bcbc83729f645d342d31f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17A25 17860 bytes

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