Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e43fb0a9fd268ef…

MALICIOUS

PDF

60.8 KB Created: 2020-03-08 00:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 92b92f0704a603c2fb5f5ed03ac8907d SHA-1: c2b233610497dfb1c9aea6c501ba55365a4e6ed6 SHA-256: 0e43fb0a9fd268efee56c7c33fe55c2dc92bf307c8f3b5851d0432cc3c308b80
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document exhibits characteristics of a link farm, containing numerous external links to other PDF files. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs suggests an attempt to redirect users to potentially harmful content or facilitate further exploitation. No scripts were extracted, but the structure and URL patterns are indicative of a malicious SEO or content distribution scheme.

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://host243.carmichaelnl.com/uploads/1/3/0/5/130543383/130543383.html#holland+america+drink+packages+prices
    • http://sjsldetroit.org/uploads/1/3/0/5/130588657/ripakixukesem-zutewe-surava-bowene.pdf
    • http://mta-sts.mail.jprye.com/uploads/1/3/0/3/130313539/51ecd.pdf
    • http://copsintransition.com/uploads/1/3/0/5/130543093/082c80c7f.pdf
    • http://www.mindingmybusinessllc.org/uploads/1/3/0/9/130969505/jalenini_vozatabelulili_lizejosifuza_berewivomoro.pdf
    • http://mysteryshoppingonlinejob.com/uploads/1/3/0/5/130552084/sojim-lanesiwez.pdf
    • http://treetopreptile.com/uploads/1/3/0/4/130435743/sanas_loniri_verebap.pdf
    • http://mta-sts.mxe.satokatzbengals.com/uploads/1/3/0/2/130289179/6796084.pdf
    • http://galaxycleaning.org/uploads/1/3/0/8/130874610/berasagadejovo.pdf
    • http://huaxiayulechengmianfeikaihu.br3h.com/uploads/1/3/0/3/130379341/vuluzulonalebu_xujinexo.pdf
    • http://clearwaterconcerts.org/uploads/1/3/0/6/130604312/3a050a99f09dcd7.pdf
    • http://cvillehomeimprovements.com/uploads/1/3/0/3/130379354/ragizidopimokav.pdf
    • http://jnicolexo.com/uploads/1/3/0/5/130538859/aa1db455d7.pdf
    • http://cristawadsworth.com/uploads/1/3/0/4/130492229/d70f8.pdf
    • http://alohapacifica.com/uploads/1/3/0/7/130776446/rukizalowumez.pdf
    • http://canniny.com/uploads/1/3/0/5/130550797/438cb.pdf
    • http://cpanel.tempsineath.madesimplydev.com/uploads/1/3/0/8/130874633/d04a0ecf400a0.pdf
    • http://hypotheekrekentool.nl/uploads/1/3/0/4/130483416/zepilonejurojimesu.pdf
    • http://zagleverage.com/uploads/1/3/0/3/130313426/karuzoli.pdf
    • http://www.spectruma.co.uk/uploads/1/3/0/4/130477541/3110001.pdf
    • http://zachstronaut.net/uploads/1/3/0/5/130542829/4725275.pdf
    • http://asperalimited.com/uploads/1/3/0/4/130476065/jerowitesa.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_off0000c008.bin
069de24f685ac96cf78ed44ebc95dc1b03082fcc4f65615429c277e9ce60d6ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC008 9256 bytes

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