Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae727eeeca675d5…

MALICIOUS

PDF

43.6 KB Created: 2020-03-24 03:29:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a7420cb745c8f97753e61956ae874244 SHA-1: c88e84c537aa415652c9be3e08cffe92cb3732b7 SHA-256: fae727eeeca675d55a5e604d825002ea52e483cfe2cc0f6252768e011c13eff1
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though heavily obfuscated, contains text related to 'face value in maths' and includes URLs such as http://stopeurocide.com/uploads/1/3/0/8/130814346/130814346.html#what+is+face+value+in+maths. This suggests a link farm or SEO poisoning tactic designed to drive traffic to potentially malicious or compromised websites. 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://stopeurocide.com/uploads/1/3/0/8/130814346/130814346.html#what+is+face+value+in+maths
    • http://www.lifedesignshop.co.uk/uploads/1/3/0/7/130776801/c2667bee7e01.pdf
    • http://liverpoolchurch.org.uk/uploads/1/3/0/8/130814121/7b6fc6f7b7d.pdf
    • http://goodguysmovie.net/uploads/1/3/0/6/130621702/nevitadesabak.pdf
    • http://laurajentertainment.com/uploads/1/3/0/7/130739073/7e4eb.pdf
    • http://workplacesafetyinspections.com/uploads/1/3/0/5/130540082/duvawone.pdf
    • http://mobilservredlist.com/uploads/1/3/0/3/130323936/7459555.pdf
    • http://nicholassearle.com/uploads/1/3/0/4/130475918/4770845.pdf
    • http://lafayetteindianaapartments.com/uploads/1/3/0/3/130379653/7989451.pdf
    • http://nadlanonline.net/uploads/1/3/0/5/130588478/2390135.pdf
    • http://www.stunningspacesstaging.com/uploads/1/3/0/7/130739980/liditoxozulezod.pdf
    • http://ltg2bangles.com/uploads/1/3/0/6/130620666/8123317.pdf
    • http://clubxboxpodcast.com/uploads/1/3/0/6/130605178/8c3d362505de.pdf
    • http://prodiagno.com/uploads/1/3/0/2/130291696/8bcfc365.pdf
    • http://zendogadventures.com/uploads/1/3/0/6/130639292/devebadojezomojugike.pdf
    • http://dirtroaddzn.com/uploads/1/3/0/9/130969854/purorurot.pdf
    • http://the-business-executive.com/uploads/1/3/0/5/130588980/rigafisasel.pdf
    • http://avadasyarasa.com/uploads/1/3/0/7/130738748/wajabajoxo-nesabuwekona.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_off00006e28.bin
3771dfc5678e8d85215f9b7d36e2c622ba87ec364d3d5c467762243d50ceacda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E28 7680 bytes
font_01_sfnt_off00008c2f.bin
b080e6aa9682ff87567a230b404ab00780bafcfd3ba11e3f536b788ca6e08ef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2F 16060 bytes

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