Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ebcc264d708176c…

MALICIOUS

PDF

56.3 KB Created: 2020-04-08 02:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b7f6e6bf8c941e233035888c8cc68f26 SHA-1: 4a095d34c6374ee54756cba4f4ab85cd50ddf9b7 SHA-256: 2ebcc264d708176cc69bc81634d63b3374519fcfe05c01b34b321ae6e8e39428
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine rankings for harmful sites. The ML classifier strongly supports the malicious nature of this PDF.

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://kitchenbyben.com/uploads/1/3/0/4/130483136/130483136.html#curva+dosis+respuesta+gradual+y+cuantal+pdf
    • http://homeworks3d.com/uploads/1/3/0/6/130620845/200254.pdf
    • http://vacationsbydana-info.com/uploads/1/3/0/5/130551188/4392074.pdf
    • http://saradinardomakeupartist.com/uploads/1/3/0/4/130475994/52d6d153ab22.pdf
    • http://foxyhealth.com/uploads/1/3/0/5/130546717/fazepef_tuzawexapem_mibudonevomeji_fonitojozeku.pdf
    • http://tlphotography.org/uploads/1/3/0/9/130969042/dedesogudalawagizedu.pdf
    • http://mdallergymd.com/uploads/1/3/0/6/130604812/7e0e17bc2d5.pdf
    • http://eastcoastsquashacademy.com/uploads/1/3/0/6/130604742/6bdc3a8512fed.pdf
    • http://estherpianova.com/uploads/1/3/1/3/131382536/dupikorefirim.pdf
    • http://studiofada.net/uploads/1/3/0/3/130379824/sevuro.pdf
    • http://facebook-marketplace098374324353.com/uploads/1/3/1/0/131070351/tazulezatugeko.pdf
    • http://emancipationcenter.com/uploads/1/3/1/4/131407278/6002398.pdf
    • http://fiedlermotorsport.com/uploads/1/3/0/7/130776864/rozafajoju.pdf
    • http://bocoguitar.com/uploads/1/3/0/8/130814531/josebebukos_bosekugos.pdf
    • http://connies2.com/uploads/1/3/0/6/130620366/e85004ed8.pdf
    • http://printreadyevents.com/uploads/1/3/0/6/130639465/7237625.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f27.bin
a26322392c215cb6212ef61e5c9f8afd9de026124f8816c25fcd6319bcd23a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F27 9380 bytes
font_01_sfnt_off0000b0ff.bin
9241742dfe1dca1e6c3e42ed5ba831f1e1308437540d47e5c26e5fc98314efbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0FF 3240 bytes
font_02_sfnt_off0000bc65.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC65 16036 bytes

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