Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eced2ec0091f129…

MALICIOUS

PDF

58.0 KB Created: 2020-03-17 21:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a2505bc574d8f569f42a56f2dcfa24a7 SHA-1: f3b3018b985fa3d18ab17e6792b99f249c5fa126 SHA-256: 8eced2ec0091f129e4c1d96c7443c7d5c4cbbf8039fb5f30a89d7d8893063a21
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains. This pattern is indicative of a link farm designed to manipulate search engine rankings or distribute malicious content. The primary URL, http://juliejesternewman.com/uploads/1/3/0/4/130436130/130436130.html#par%C3%A1lisis+cerebral+traducido+al+ingl%C3%A9s, suggests a lure related to 'cerebral paralysis translated to English'. The heuristic PDF_SEO_LINK_FARM specifically flags this behavior, indicating a high likelihood of malicious intent.

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.
  • 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://juliejesternewman.com/uploads/1/3/0/4/130436130/130436130.html#par%C3%A1lisis+cerebral+traducido+al+ingl%C3%A9s
    • http://mail.jennawatt.co.uk/uploads/1/3/0/5/130543761/sepozuk.pdf
    • http://laschober.net/uploads/1/3/0/2/130287553/sosulofizexef-nutafevuzu-mulafe.pdf
    • http://shapenv.com/uploads/1/3/0/4/130436127/nisefugubifelewapap.pdf
    • http://taekwondo-scorpions.net/uploads/1/3/0/6/130603978/polepabimo-leroda.pdf
    • http://partabcdeasyas123.com/uploads/1/3/0/6/130620618/xikixokosiwefib.pdf
    • http://sheageist.com/uploads/1/3/0/7/130775865/temojiri.pdf
    • http://cerrahomes.com/uploads/1/3/0/6/130604729/3778729.pdf
    • http://kelownamicroacupuncture.com/uploads/1/3/0/7/130775145/bedoga.pdf
    • http://bluesmokebbq.org/uploads/1/3/0/6/130603937/seregowewavakoma.pdf
    • http://www.deepdrillinginsights.com/uploads/1/3/0/3/130379096/5293675.pdf
    • http://adaptiveplanningconsultant.com/uploads/1/3/0/6/130604788/lowavagef_nijotigiti.pdf
    • http://www.albanyhr.com/uploads/1/3/0/6/130605133/fanasegewoja.pdf
    • http://clearviewbicyouth.com/uploads/1/3/0/6/130622114/dfbcb21b223af.pdf
    • http://loughborough-woodcrafts.com/uploads/1/3/0/7/130775965/votekaxugeso_bifeguduxijozi.pdf
    • http://fancymynails.com/uploads/1/3/0/8/130874474/mowidabazeku.pdf
    • http://bonnsbroncos.com/uploads/1/3/0/8/130874492/rabiwalajujukepolope.pdf
    • http://citizens-medicare.com/uploads/1/3/0/5/130550756/ragijagovem.pdf
    • http://mljmusic.org/uploads/1/3/0/6/130605161/17625ecddd.pdf
    • http://www.harnesslabels.co.uk/uploads/1/3/0/3/130313153/00fe2.pdf
    • http://whirlwindlabs.co/uploads/1/3/0/6/130639027/gazovofuzeteri.pdf
    • http://missionepossibilehk.com/uploads/1/3/0/2/130289242/e19bf320b5fc54.pdf
    • http://agreaterstorm.com/uploads/1/3/0/4/130476493/1114234.pdf
    • http://bamboo-straw.shop/uploads/1/3/0/3/130379430/dokumabititu.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_off0000a195.bin
85988f63e64c8ff613447aea031f1824eab00615c38d19c8003aac7cb9d784da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA195 8948 bytes
font_01_sfnt_off0000c1d2.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D2 16204 bytes

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