Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eda98048466990c…

MALICIOUS

PDF

40.2 KB Created: 2020-03-15 14:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b44d4c18aff8c5009915eb355d590761 SHA-1: 6a9d3bb26527a25e9540ec65f2f2cf73774e5809 SHA-256: 0eda98048466990cb8a9d83891ffc1f5785fd50943acaeadf94604037e8cae8b
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. While no scripts were directly extracted, the embedded links suggest an attempt to lead the user to a compromised or malicious web resource.

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://meshayla.com/uploads/1/3/0/9/130969679/130969679.html#destiny+2+prestige+leviathan+guide
    • http://sixtydaywebsite.com/uploads/1/3/0/6/130621746/5323179.pdf
    • http://blackseabeachinc.com/uploads/1/3/0/2/130270761/rebataxefibo.pdf
    • http://tryharvest.com/uploads/1/3/0/6/130604576/pokiru_pufam_fivif.pdf
    • http://hqrack.us/uploads/1/3/0/5/130550858/8782212.pdf
    • http://creativitycoaching.co.uk/uploads/1/3/0/4/130475966/tekogobiwo.pdf
    • http://hostmaster.eatatheritage.co.uk/uploads/1/3/0/6/130621608/a5d19b.pdf
    • http://kaiouti.com/uploads/1/3/0/7/130739225/dekis.pdf
    • http://engravecraze.com/uploads/1/3/0/7/130739120/1403283.pdf
    • http://southernredhomes.com/uploads/1/3/0/5/130589035/jiporomamumib-zoporug-vapigubuk-xemidesi.pdf
    • http://joseon.net/uploads/1/3/0/5/130539888/2353675.pdf
    • http://www.drvdv.com/uploads/1/3/0/7/130775288/b92e6687.pdf
    • http://mail.feyp.eu/uploads/1/3/0/8/130814914/3baf6e0e9d8130b.pdf
    • http://jerryslawnsalon.com/uploads/1/3/0/6/130604892/6408000063f123f.pdf
    • http://dancepalmsprings.net/uploads/1/3/0/4/130476502/boravadutazer_lijiwe_pafatixuvidu.pdf
    • http://kitandclobber.co.uk/uploads/1/3/0/6/130620420/solaminu.pdf
    • http://mta-sts.mx.highlandmillsumc.org/uploads/1/3/0/6/130604317/belibuma.pdf
    • http://sparksnewstoday.com/uploads/1/3/0/7/130739964/gupijefu.pdf
    • http://francescaservalliwriter.com/uploads/1/3/0/2/130289731/2176798.pdf
    • http://alliancerestorationkc.com/uploads/1/3/0/6/130604419/nezadovit.pdf
    • http://www.g5livestockllc.com/uploads/1/3/0/6/130639632/teziliwigikope.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_off0000767e.bin
aff794315c778553456c06315aca320b26ca26d48f2ec954842d7936c6dc238f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x767E 7304 bytes

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