Malicious PDF — malware analysis report

Static analysis result for SHA-256 9506dedd3ed2c632…

MALICIOUS

PDF

53.4 KB Created: 2020-03-30 13:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 264e1b8442dd8b8695780ad86ec600e9 SHA-1: 81d564048d04e68041af7fce025c46b4b51f99fc SHA-256: 9506dedd3ed2c6328663eedeab0b9bb84be4aa1ffa93207e951475cd4234a6a6
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains text related to 'Partes del proyecto de investigacion wikipedia' and mentions the wkhtmltopdf generator, suggesting a lure document. The primary attack pattern involves directing users to a vast network of external URLs, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://edgelandscapeandmaintenance.com/uploads/1/3/0/6/130639517/130639517.html#partes+del+proyecto+de+investigacion+wikipedia
    • http://nwasaltroom.com/uploads/1/3/0/2/130288321/6819343.pdf
    • http://loftsec.com/uploads/1/3/1/4/131407307/gojit.pdf
    • http://lindenhillslaw.com/uploads/1/3/0/2/130289346/8879507.pdf
    • http://ponilox.com/uploads/1/3/0/6/130604589/gogusuri_favojotexurog_bojejodisij_lubiwovixewi.pdf
    • http://meganmmoore.com/uploads/1/3/0/9/130969341/gipijazoru_pefutiximujoko_juvubiwafope.pdf
    • http://balanceaftercancer.org/uploads/1/3/0/6/130605124/gefesenines.pdf
    • http://74-123-72-200.mgwnet.com/uploads/1/3/0/4/130483928/tukedewewe_dagodonide_kukiwasoxire.pdf
    • http://noroydesign.com/uploads/1/3/0/7/130739478/2815692.pdf
    • http://1504magaz.space/uploads/1/3/0/7/130738912/2112807.pdf
    • http://encron.net/uploads/1/3/0/6/130621683/sufigudipudux.pdf
    • http://bluethumb.club/uploads/1/3/1/0/131070080/vazotatujavomibig.pdf
    • http://phillydish.net/uploads/1/3/0/4/130475996/golanenekekise_jumapemom_sikaxosaxegatad.pdf
    • http://1daveowens.com/uploads/1/3/0/8/130873784/5710413.pdf
    • http://fulcrumoffshore.com/uploads/1/3/0/5/130551311/fepiludidi.pdf
    • http://wyliecat30-silkye.com/uploads/1/3/0/4/130483216/zokokorezo.pdf
    • http://mta26.somekindofsimple.com/uploads/1/3/0/6/130621317/kegodukukep-limenovaxura-zajirenu-dejimo.pdf
    • http://danielgarberllc.com/uploads/1/3/0/4/130476262/fumazufanekasuv-vinox.pdf
    • http://jonkuhnglass.art/uploads/1/3/0/7/130775107/xabebarewitafojutej.pdf
    • http://karinamadrigal.com/uploads/1/3/0/7/130740591/3535598.pdf
    • http://kylebragger.net/uploads/1/3/0/7/130738890/nofuzigaduzo-domunobo.pdf
    • http://facultyretreat.com/uploads/1/3/0/6/130639474/kafibikanujevobo.pdf
    • http://may-i.life/uploads/1/3/0/8/130815726/memaxov_komusovirorudip_mibofexomiba.pdf
    • http://islamilainenhautaus.info/uploads/1/3/0/5/130590312/7906798.pdf
    • http://kathrynamrhein.com/uploads/1/3/0/8/130814868/folonifub-juwebalawuwu-luduj-lejelijorupavox.pdf
    • http://besutobites.com/uploads/1/3/0/6/130604424/tovanigikoxupus-xulikusa-mejefuzubati.pdf
    • http://islamilainenhautaus
    • 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_off00008591.bin
afb1f0411f3d24e251a6af6d15e9c8c89cc362be3743158c4b72c62ea39c9be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8591 9044 bytes
font_01_sfnt_off0000a676.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA676 2652 bytes
font_02_sfnt_off0000afdd.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDD 16036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.