Malicious PDF — malware analysis report

Static analysis result for SHA-256 d930fb7c5fe05ac4…

MALICIOUS

PDF

51.5 KB Created: 2020-03-12 11:37:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2cc0d8cefa17184e6b9412af86804b56 SHA-1: 83526ca60fd5a0ad45dac67856e125493bc50633 SHA-256: d930fb7c5fe05ac4db09df07d5fcf18a18b3205bf6813a5f1b362a7bf366ac1d
94 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. The document body also contains a URL that appears to be a lure for technical support or a scam. The primary function of this document appears to be directing users to a network of external websites, likely for SEO manipulation 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://riversidecountyhistory.org/uploads/1/3/0/5/130588291/130588291.html#how+to+connect+afterglow+headset+ps4
    • http://www.bshelart.com/uploads/1/3/0/7/130776322/919676998.pdf
    • http://laurelmedpa.com/uploads/1/3/0/7/130739867/c96224.pdf
    • http://gingerbreadhouseclc.com/uploads/1/3/0/6/130620563/c4f9fa2.pdf
    • http://ukcitizenshipbyinvestment.com/uploads/1/3/0/8/130874141/rigel.pdf
    • http://andrewcecookephotography.ca/uploads/1/3/0/3/130323603/kolazawumaba.pdf
    • http://www.myteamnavigate.com/uploads/1/3/0/3/130313082/sivufugup.pdf
    • http://shampoochesbt.com/uploads/1/3/0/6/130622005/pipifugubexuzitamok.pdf
    • http://charlotteconsciousconnections.com/uploads/1/3/0/6/130621552/4163191.pdf
    • http://hostmaster.richteaprojects.co.uk/uploads/1/3/0/6/130639928/4732946.pdf
    • http://drdiagnostico.com/uploads/1/3/0/6/130620632/xikijomar.pdf
    • http://www.jordanservicesllcohio.com/uploads/1/3/0/2/130272403/8345074.pdf
    • http://convegnoartemercatosiena.com/uploads/1/3/0/2/130289638/719550.pdf
    • http://dyingwell.life/uploads/1/3/0/6/130620807/pabatugubukom-vinija.pdf
    • http://www.vermontevap.com/uploads/1/3/0/2/130287852/doloj_famutejise_jezuli.pdf
    • http://exotictreehouse.com/uploads/1/3/0/2/130291658/d0107e.pdf
    • http://pvcs2019.org/uploads/1/3/0/3/130313027/b6ad3ccf76.pdf
    • http://gulfinvestgrp.com/uploads/1/3/0/7/130738680/6ddd850206.pdf
    • http://positivelygroovy.net/uploads/1/3/0/6/130639648/884b9bcdfd.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_off00009f6e.bin
67efacabad26b2df89cd11d97f58ffda1d31e534a923e353ccaf3912d4f87158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F6E 8192 bytes

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