Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc378df05e7a9b87…

MALICIOUS

PDF

39.5 KB Created: 2020-03-27 03:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a7fb37fef06bcff603d1f7f39e03086b SHA-1: c549d695e1e0e21f58f4df54085b4da26bd97ef4 SHA-256: bc378df05e7a9b87cd918042a80ed5475015eb5b183f2013708f36290ae29017
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of external links to other PDF files hosted across various domains. This technique is often used for SEO spam or to distribute malicious payloads. The ML classifier strongly indicated maliciousness, and the presence of a link farm supports this assessment. No scripts were extracted from this sample.

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.
  • 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://newjerseyhomebuyerseminar.com/uploads/1/3/0/8/130874384/130874384.html#bommarillu+telugu+movie+ringtones
    • http://mireillemanzone.net/uploads/1/3/1/1/131163718/mutedubise.pdf
    • http://navarrofilmes.com/uploads/1/3/0/4/130477126/mepoxipa-xivux-xobale-kixiwazalopew.pdf
    • http://www.wavertonphysio.com/uploads/1/3/0/8/130814133/lajerupopu.pdf
    • http://tomerperry.com/uploads/1/3/0/4/130435811/buragul-wivexexo.pdf
    • http://stavrospress.com/uploads/1/3/0/5/130541624/bebazo.pdf
    • http://septiccleaningsalem.com/uploads/1/3/0/3/130313122/8609855.pdf
    • http://photomathel.org/uploads/1/3/0/6/130605289/a01bb3.pdf
    • http://alocinllc.com/uploads/1/3/0/5/130588813/xusux_nunutoruv.pdf
    • http://325986690869568534.com/uploads/1/3/0/2/130287211/nelowenavizug.pdf
    • http://great8baseball.com/uploads/1/3/0/4/130477335/jiwubiganoza-vikibejewewo.pdf
    • http://cardworldebit.eu/uploads/1/3/0/6/130621648/2f41a2f047a.pdf
    • http://www.zingjeplezier.nl/uploads/1/3/0/5/130540072/2805053.pdf
    • http://pizza4lyfe.com/uploads/1/3/0/8/130873782/mozidodonuzakadixes.pdf
    • http://callthemformeprototype.com/uploads/1/3/0/2/130272348/pilavuxe_musiworo_sosenumonada_moborojopo.pdf
    • http://reallysimplerealestate.org/uploads/1/3/0/4/130476216/jelalaboleme_tarajegibuxaz_pitiwugiri_gabapa.pdf
    • http://www.sandbox.northwestuu.org/uploads/1/3/0/6/130639181/1686554.pdf
    • http://www.beyondthetray.com/uploads/1/3/0/2/130288492/xufex.pdf
    • http://vertexaccess.com/uploads/1/3/0/7/130776649/6085199.pdf
    • http://securitycitizen.com/uploads/1/3/0/6/130605347/9772334.pdf
    • http://theholisticwomensclinic.com/uploads/1/3/0/5/130590698/marozemaxarabukejo.pdf
    • http://eqifayulechengwangzhi.f18.ebkf.org/uploads/1/3/0/2/130271097/42a497fe.pdf
    • http://www.doodlecrumbs.com/uploads/1/3/0/6/130604582/5fcd234096e2.pdf
    • http://www.thoughtsfromnowhere.com/uploads/1/3/0/9/130969262/eea5b84447d8.pdf
    • http://www.thoughtsfromnowhere.com/uploads/1/3/0/9/130969262
    • 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_off00006102.bin
5278024270de67705d3a5034a26ce2f5e1d9e53f50705cc770b2190155f81e7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6102 6728 bytes
font_01_sfnt_off000071a5.bin
c00ff4db517f8da2564df90fdad200db45cdf10cf47a5ad71538750f2aeb288c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A5 7696 bytes

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