Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2da68880c9530d…

MALICIOUS

PDF

40.0 KB Created: 2020-04-02 05:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2a2d6663b0ef2e7a4e8d7b895164a989 SHA-1: cac7b442a820a21d1ac0a842f0245a0b2ebf6583 SHA-256: 8a2da68880c9530d3e9612e871a33c9714fc64ec8a4b7254c09b56f353df81e3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The embedded document body text, though partially garbled, contains a URL that is also present in the list of external links. This suggests the document's primary purpose is to redirect users to a network of other PDF files, likely for SEO spam or to host further malicious content.

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://mentorshipprogram.org/uploads/1/3/0/2/130270889/130270889.html#tipos+de+planos+urbanos+y+ejemplos
    • http://seasidecreationsflorida.com/uploads/1/3/0/4/130435509/1222111.pdf
    • http://mycleanly.com/uploads/1/3/0/7/130775342/f8af4302b45.pdf
    • http://patrick-mcwhorter.com/uploads/1/3/0/6/130639201/d28cf07.pdf
    • http://kuraves-global.com/uploads/1/3/1/4/131437107/2967635.pdf
    • http://scottmacivor.com/uploads/1/3/0/6/130621131/mufamosaw.pdf
    • http://theworthseries.com/uploads/1/3/0/9/130969772/jegaliwomisolis-moforijigirevob-zodasi.pdf
    • http://longworkselectricalservice.com/uploads/1/3/1/4/131407355/2634d115.pdf
    • http://lorrainemonteagut.com/uploads/1/3/0/6/130620752/13d6c7e6aed.pdf
    • http://caribmb.com/uploads/1/3/0/9/130969920/f8d88dad9955.pdf
    • http://argemployee.com/uploads/1/3/0/5/130588565/6011710.pdf
    • http://51startnew.com/uploads/1/3/0/6/130620515/bd0376253451c6.pdf
    • http://schhpif.info/uploads/1/3/0/5/130588277/rixel.pdf
    • http://improvwork.com/uploads/1/3/1/3/131383727/gisumizerup_kogod_goremova.pdf
    • http://distribuidorazaqueo.com/uploads/1/3/0/2/130273944/motinafojow-zosow-nafawu.pdf
    • http://wealthwavetexas.com/uploads/1/3/0/5/130589389/2652330.pdf
    • http://friendsoflcas.com/uploads/1/3/0/4/130476215/cc1e4157.pdf
    • http://priscillanorwoodharris.com/uploads/1/3/0/4/130483416/dalijeneregowo.pdf
    • http://humactive-formation.com/uploads/1/3/0/6/130604010/91b4947b5.pdf
    • http://lyndenservicecenter.com/uploads/1/3/1/0/131070918/1b3dd31eef1827.pdf
    • http://momnovel.com/uploads/1/3/0/2/130289623/kaxelewar.pdf
    • http://74-123-77-240.mgwnet.com/uploads/1/3/1/4/131437207/1898272.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070fb.bin
d4eeb48a8a7bc5e3fc9fd2fc747d328aab8378637fe39bb2b094a2e7fdd63551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FB 8764 bytes

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