Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2e58930a638e27…

MALICIOUS

PDF

40.3 KB Authoring application: Mobipocket Creator
MD5: 138c4b5dd1f958d8b25f047d14562616 SHA-1: 39ed053f484bc4aee62fa7379c9170c563dde44a SHA-256: 7f2e58930a638e27c53b3e3197d93094ad732c28e871d34a72e98710d778c6db
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. While no scripts were directly extracted, the PDF structure itself facilitates the distribution of malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://74-123-79-62.mgwnet.com/uploads/1/3/0/4/130488123/kudabegaza-lebelaj-jebesu.pdf
    • http://rowanlestat.com/uploads/1/3/0/8/130873994/a9b9459c31.pdf
    • http://alanier2.com/uploads/1/3/0/5/130551890/suxenek.pdf
    • http://www.gamoligroup.com/uploads/1/3/0/5/130588775/kaxosajegazik_davenoponago_pirew.pdf
    • http://bluejaywritings.com/uploads/1/3/0/6/130620818/xagemalirolupixiruza.pdf
    • http://fitoreuniforms.com/uploads/1/3/0/7/130776264/a4fc91.pdf
    • http://www.marbeduke.com/uploads/1/3/0/7/130776673/4548990.pdf
    • http://www.westmorlandrealty.net/uploads/1/3/0/5/130544823/vogexalu.pdf
    • http://www.bluejupiter.com/uploads/1/3/0/8/130874320/d9bb3a52f2.pdf
    • http://34manitou.com/uploads/1/3/0/6/130620542/xaxudi-rodafuwe-sebirawikadegu.pdf
    • http://tanishqspa.com/uploads/1/3/0/4/130476413/4ffe2efe79e341.pdf
    • http://mrsduganshomeroom.com/uploads/1/3/0/2/130289693/a82d366cbec08.pdf
    • http://www.secrethypnosis.net/uploads/1/3/0/9/130969012/1965273db8.pdf
    • http://chadthehammercreations.com/uploads/1/3/0/2/130272936/8145992.pdf
    • http://stygianvineyards.com/uploads/1/3/0/4/130489527/6657917.pdf
    • http://verteschlaw.net/uploads/1/3/0/7/130775902/9822365.pdf
    • http://dccontractingllc.net/uploads/1/3/0/3/130324227/ee1fbd65e2bdc.pdf
    • http://c-a-k-e-bae.com/uploads/1/3/0/3/130313161/nuburizogojozu-sarizijuj.pdf
    • http://blackhawbuilders.com/uploads/1/3/0/2/130289732/130289732.html#beckman+coulter+act+diff+5
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027b2.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B2 16036 bytes
font_01_sfnt_off00003ed7.bin
22b8bba5937d5c8513b1881ec1bd56070857e07fa8b44faf00acdf4edbad287f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3ED7 8236 bytes

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