Malicious PDF — malware analysis report

Static analysis result for SHA-256 584798299fc31849…

MALICIOUS

PDF

42.7 KB Created: 2020-08-27 14:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ffc2d89f717109edaa7162203ff1d5d SHA-1: 21b1f499e767a9fde8bfef2b5ed548561d084fef SHA-256: 584798299fc3184920d93fc636fdd172dc9f3eeb6bbb8668efa41c23b6caf788
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate this is likely an SEO link farm designed to either manipulate search rankings or redirect users to malicious content. The document body itself is heavily obfuscated and contains a mix of readable text and what appears to be encoded data, further suggesting a malicious intent to obscure its true purpose.

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.com/pify?keyword=y%25C3%25BCzey+merkezli+k%25C3%25BCbik+yap%25C4%25B1+%25C3%25B6zellikleri
    • http://wetet.letscureibs.com/uploads/1/3/1/4/131453247/renepo.pdf
    • http://dibuwi.thewritingtreasurechest.com/uploads/1/3/1/1/131164250/830bc3d533e6.pdf
    • http://tonuruvaj.dominiquegebbink.com/uploads/1/3/2/6/132696212/biwisa.pdf
    • http://mojubu.wellingtonlandingspto.com/uploads/1/3/0/8/130874218/5428198.pdf
    • http://files.leopardsrealm.com/uploads/1/3/0/9/130969710/a5ce12bb9fc7.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/41358088414.pdf
    • https://cdn.shopify.com/s/files/1/0444/4153/4631/files/i_17_to_flagstaff_road_conditions.pdf
    • https://cdn.shopify.com/s/files/1/0431/9330/3204/files/69770420910.pdf
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/30_point_buck_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/38903170931.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/apa_manual_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/more_speak_english_like_an_american.pdf
    • https://cdn.shopify.com/s/files/1/0428/4658/4999/files/architecture_design_process.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/dexogubopabizabataxuzi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/dejofekerovi.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_off00006415.bin
ca15b5617dc79992b8f2c68dec7e38dab9d3ca8eaf818ccd3c8afddc34b6fb15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 5396 bytes
font_01_sfnt_off000075e7.bin
d7681bf521c72150db6e87652820b6b467e290bb6132b19aebe781be9d765f90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E7 11824 bytes

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