Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fec3bc6ab47e96f…

MALICIOUS

PDF

48.8 KB Created: 2020-04-03 12:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 958dc7d20881e28fc2eda9b0002b7f06 SHA-1: fcb855c14282b798959db0900684c55115eee26d SHA-256: 5fec3bc6ab47e96f13750ab0af675466c3c3baf598cb77604c3c3c40c82b41e1
96 Risk Score

Malware Insights

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

The PDF document contains a lure for downloading a game, directing the user to a URL that hosts a malicious HTML file. This file likely serves as a landing page for a phishing or malware distribution campaign. The PDF's structure and embedded links suggest a link farm tactic, aiming to obscure the true malicious intent and distribute malware through numerous seemingly unrelated domains.

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://theovercomersblueprint.com/uploads/1/3/1/3/131380619/131380619.html#descargar+pokemon+rojo+fuego+en+espa%C3%B1ol+pc+gratis
    • http://timetogoevents.com/uploads/1/3/0/6/130639424/c487218460.pdf
    • http://ghoshaikara.com/uploads/1/3/0/6/130621443/nelosujawe.pdf
    • http://www.southerngothiccollective.com/uploads/1/3/0/9/130969279/xutepavibexej.pdf
    • http://thesidejob.com/uploads/1/3/0/3/130323612/wesomafa.pdf
    • http://firstretrospective.com/uploads/1/3/0/6/130620773/vaketefoxi.pdf
    • http://104trowbridgest.com/uploads/1/3/0/8/130873802/sujazegaredus_bituju.pdf
    • http://ridingwithchrist.com/uploads/1/3/0/8/130813314/7543543.pdf
    • http://radio-anywhere.net/uploads/1/3/0/6/130621280/lakojudiz.pdf
    • http://soulpremium.com/uploads/1/3/1/3/131398574/60317.pdf
    • http://beneficialearth.com/uploads/1/3/0/7/130776434/jutixirepesisel.pdf
    • http://wickedporch.com/uploads/1/3/0/6/130604590/2094225.pdf
    • http://wolvertonmedia.com/uploads/1/3/0/7/130740017/namejowa.pdf
    • http://kennedyjorgensen.com/uploads/1/3/0/6/130603900/vibujanefaguw.pdf
    • http://neverweatherband.com/uploads/1/3/0/2/130288514/xavej.pdf
    • http://sbinventions.com/uploads/1/3/1/3/131384396/jurumolajaj_nipaw_jefofexogav.pdf
    • http://brokeragebuds.com/uploads/1/3/0/6/130603925/jurare-lavibidi.pdf
    • http://missiris.online/uploads/1/3/0/3/130379181/8837520.pdf
    • http://pizzlepaints.com/uploads/1/3/0/7/130740573/5452004.pdf
    • http://conwayair.net/uploads/1/3/0/5/130539440/jodasixifat.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072f9.bin
83bbdd5f3246f823e7ebbbdd51f0d032dfc93cea789abd55512e14ccf2eeaa15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 9020 bytes
font_01_sfnt_off000093fb.bin
83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93FB 2604 bytes
font_02_sfnt_off00009d2e.bin
40a403f8312ff9c93041e514e965a4d57d797ba541f1da729710ef172887bfc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2E 16060 bytes

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