Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ceb7b4bd9bdf37…

MALICIOUS

PDF

39.7 KB Created: 2020-09-15 10:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a47d6bad44320b6c857dedec7dea5782 SHA-1: fc5c8506888716cbd2c032f9cb78b01c29b09a3f SHA-256: a2ceb7b4bd9bdf370d4e3c37e33dfaeef29871843ba1bfd22776fb93230f1c25
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to PDF files hosted on various domains. One prominent link, 'https://ttraff.link/pify?keyword=yugioh+duel+generation+cheats+android', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/pify?keyword=yugioh+duel+generation+cheats+android
    • http://files.deborahkinisky.com/uploads/1/3/0/7/130738822/a2ee0427ea26c.pdf
    • http://files.workingclasstattoosupply.com/uploads/1/3/0/8/130813888/kugasumepomodab.pdf
    • http://juzutomi.rosierhome.com/uploads/1/3/1/3/131383483/pizovitapuv-mimedut-taxip.pdf
    • http://vobuzom.bradvanambergrealestate.com/uploads/1/3/1/4/131408738/3978261.pdf
    • http://zelafi.yourgardenyourhome.com/uploads/1/3/0/7/130776493/5804499a.pdf
    • http://files.deliciousdelivered.net/uploads/1/3/0/7/130775834/4422088.pdf
    • http://files.b2autodesigns.com/uploads/1/3/0/7/130775977/debut.pdf
    • http://files.sunshinecanyondogrescue.org/uploads/1/3/0/8/130874146/mimunerar.pdf
    • http://files.designs2cpgh.com/uploads/1/3/1/4/131410545/xusazapez.pdf
    • https://static.usrfiles.com/ugd/c1c462_d05b4a4182c944d39bc18e1c8ca44394.pdf
    • https://static.usrfiles.com/ugd/cc089a_d07a3d068f1f41da99e28376f6349b5c.pdf
    • https://static.usrfiles.com/ugd/7fedcf_31c7dc8a924e4dcdaa9986091ff177a7.pdf
    • https://static.usrfiles.com/ugd/3fd21f_e4d759515a784027a4a45bcbc635ecf3.pdf
    • https://static.usrfiles.com/ugd/c3f59f_3c5f9706ecf34ecfab741d26a75183fd.pdf
    • https://static.usrfiles.com/ugd/affaa6_a7ab63603c464c57971de0189814e6f3.pdf
    • https://static.usrfiles.com/ugd/1e557c_05b8ad2cf2ae4496acddabeb0f37f1fb.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_off00005cd1.bin
96db4ec676720906ff88adace1e08cda5bf8c59b3e7bd4f5b54de3c9babc7b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD1 5164 bytes
font_01_sfnt_off00006e5a.bin
794d42f2bf2d9e09e04c159ca8915a3f7d8c90e36ad1c8ce29d10db31c2c1c53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5A 10464 bytes

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