Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6ca81fae0e9eac…

MALICIOUS

PDF

42.6 KB Authoring application: Serif PagePlus
MD5: 1bbafea501195f91920782dd16dfdab2 SHA-1: c26bd5084744a578cfe4ba581cb891751ce628eb SHA-256: 7d6ca81fae0e9eace3025f30dffd1728f95ef60d4f5927acd131b0ec4b2e915e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a mass external PDF link farm, with the dominant host being batonrougenaturalhairexpo.com.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://batonrougenaturalhairexpo.com/uploads/1/3/0/6/130620869/6730489.pdf
    • http://lawnservicewintergarden.net/uploads/1/3/0/5/130588548/sopigoleri-bijojano-sagixuxem.pdf
    • http://netmassive.net/uploads/1/3/0/3/130324063/5094434.pdf
    • http://villagecarehenfield.co.uk/uploads/1/3/0/6/130620521/a1984149.pdf
    • http://vittonezone.com/uploads/1/3/0/5/130552084/cf8c7.pdf
    • http://milieu-art.com/uploads/1/3/0/4/130476152/dde768d6503c.pdf
    • http://agencepro-pose.com/uploads/1/3/0/6/130639511/4b423c70.pdf
    • http://claybon.shop/uploads/1/3/0/5/130539465/mijilijenoxi_gixujemipa_lowuzedo.pdf
    • http://retreatinsider.com/uploads/1/3/0/2/130289711/f394cfd34.pdf
    • http://missioncovenantyouth.org/uploads/1/3/0/4/130489410/bozine.pdf
    • https://kiloxozijewova.weebly.com/uploads/1/3/0/3/130312929/suwagabefew.pdf
    • http://allergy.mediutopia.com/uploads/1/3/0/3/130323738/130323738.html#parts+of+a+friendly+letter+worksheet+printable

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014b5.bin
1010c0acfe5911858b33cb2b79da319442a284577cb42a602016ea9512a64e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B5 8092 bytes
font_01_sfnt_off00005f76.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F76 16204 bytes

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