Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ea53906c62e3c2…

MALICIOUS

PDF

47.5 KB Created: 2020-03-30 04:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b227fb494d03bb662c177eec6d3cb271 SHA-1: 086da0635ef7ffae390d74f8995f3fba650f71eb SHA-256: 86ea53906c62e3c262637117511fc909b092297ea1223354601f976036224da4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

This PDF document was flagged as malicious by an ML classifier and contains a large number of external links, indicative of a link farm or SEO poisoning attack. The embedded URLs point to various domains, suggesting an attempt to distribute traffic or host potentially malicious content across multiple sites. No scripts were extracted, but the sheer volume of outbound links is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://nashobavalleyextractco.com/uploads/1/3/0/5/130546977/130546977.html#conversion+factor+from+cm3+to+ft3
    • http://jglenos.net/uploads/1/3/0/4/130476624/ca2d31004ece04.pdf
    • http://thewaybrea.com/uploads/1/3/0/5/130551935/6379144.pdf
    • http://amensajero.com/uploads/1/3/0/7/130776821/pisumidireku-zakip-zogelire-gunibivi.pdf
    • http://elitetestspecialist.com/uploads/1/3/0/9/130969663/e6318ad91ffcd.pdf
    • http://nicholemannion.com/uploads/1/3/1/4/131405962/tizolibeziroxofezu.pdf
    • http://bedoyaproductionllc.com/uploads/1/3/0/8/130873860/e190c068d8.pdf
    • http://searchersend.com/uploads/1/3/0/8/130874350/25ed2e51f.pdf
    • http://huntsmanmassage.com/uploads/1/3/0/9/130968972/zofufibavulabe.pdf
    • http://qualitytouchhealthcare.com/uploads/1/3/0/8/130874391/773282268e01d0.pdf
    • http://dontgoto.work/uploads/1/3/0/5/130541064/kasuzumozonopa_bukamekojejaluw_jobixokaz.pdf
    • http://nailvenue.com/uploads/1/3/0/3/130312950/fupogub_wireteloziw_vidifitow.pdf
    • http://tosmart-ledlights.com/uploads/1/3/0/5/130539305/kazupigifiwudiwe.pdf
    • http://rdapiran.com/uploads/1/3/0/6/130639956/3897185.pdf
    • http://completenaturalent.com/uploads/1/3/0/5/130589334/pejuvalam-sunipagidab-surome-buvajewexenira.pdf
    • http://transemantique.com/uploads/1/3/0/3/130323185/65136327509e5b4.pdf
    • http://marketingdigitalc5.com/uploads/1/3/0/3/130323461/8899244.pdf
    • http://essentialoilfacts.info/uploads/1/3/0/3/130379604/manitizilafinabara.pdf
    • http://ecoevodevo.org/uploads/1/3/0/5/130589036/gofixix-tedalilova.pdf
    • http://nemographics.com/uploads/1/3/0/4/130436494/wedukunodudelov_xapepajatilo_najep_tupolabapim.pdf
    • http://blessedinbali.com/uploads/1/3/0/6/130620826/7333324.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008343.bin
0f4b09e05ba6a7c8e39312703f9b711a86e4722ea7cd9e7f589cc6091ed87ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8343 8892 bytes
font_01_sfnt_off0000a580.bin
cf2338b7895a3a873add1db7dfb411390262a2a3d24e5b3dccff59843624ea97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA580 2704 bytes

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