Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee88b3ea4c0071f3…

MALICIOUS

PDF

24.9 KB Created: 2020-04-05 10:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 39623ad6a1468c17dd42a87cbad78b5c SHA-1: 27d05135049feddbf528d8eb1ea06b28aa114848 SHA-256: ee88b3ea4c0071f340c5c7466e8cb73b464b0bea2d49de0afbbb9ea9fa07f28a
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO poisoning tactic. The document body and one of the extracted URLs indicate a lure to download 'microsoft office word 97 2003 gratis español', which is a common pretext for distributing malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://christinekovacs.com/uploads/1/3/1/0/131070498/131070498.html#descargar+microsoft+office+word+97+2003+gratis+espa%C3%B1ol
    • http://kerehiphotography.com/uploads/1/3/0/4/130436173/3114686.pdf
    • http://seventhlightfilms.com/uploads/1/3/0/9/130969433/5005465.pdf
    • http://alfloorcare.org/uploads/1/3/0/8/130814143/risutafidazadot.pdf
    • http://ctrsustainablepractices.org/uploads/1/3/0/7/130739012/xebepugigevugo.pdf
    • http://jacquezvoicestudio.com/uploads/1/3/0/6/130621258/runudakun-xopop-takamagu.pdf
    • http://ls1counselling.com/uploads/1/3/0/6/130604422/jimosaxelefegil.pdf
    • http://romansolopov.com/uploads/1/3/0/3/130312951/3428449.pdf
    • http://eurekameasurei.com/uploads/1/3/0/3/130323381/jalixejajiwel_kilenizodopixo_kizezesekebefe_mederafuxewos.pdf
    • http://whitelinecreations.com/uploads/1/3/0/3/130323151/1517273.pdf
    • http://petsatparadise.com/uploads/1/3/0/6/130620666/vidiwilinadiwe.pdf
    • http://agtechday.com/uploads/1/3/0/6/130604191/4806738.pdf
    • http://eblastsandblasting.com/uploads/1/3/0/8/130813796/3459625.pdf
    • http://emcustomfurniture.com/uploads/1/3/0/2/130291507/wifirulegexuxat.pdf
    • http://thefireflymystic.com/uploads/1/3/0/5/130539458/rolam-muguxi.pdf

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