Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ebc7a0ea389035…

MALICIOUS

PDF

38.4 KB Created: 2020-03-23 13:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 06d058a9e3ace793e9728056fd3012b4 SHA-1: 8fd57e2f0f490ae73245a8fb17c36f3632046589 SHA-256: 88ebc7a0ea3890358ff6604a7395225a44bf5ba69297a85ba59a72db07a64a0a
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains references to 'Honda gx610 repair manual' and the authoring application 'wkhtmltopdf', indicating a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to a network of external URLs, likely for malicious purposes such as phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://totallydreams.com/uploads/1/3/0/5/130590153/130590153.html#honda+gx610+repair+manual
    • http://www.brightoniowachamber.com/uploads/1/3/0/8/130874593/dd0aa.pdf
    • http://easy2rent.org/uploads/1/3/0/3/130313166/sovela-gimunak-giwosar.pdf
    • http://jinxjamison.net/uploads/1/3/0/7/130775856/jodoxo.pdf
    • http://www.dlilys.com/uploads/1/3/0/7/130739062/3b21ee62a31.pdf
    • http://lakehomemag.com/uploads/1/3/0/6/130639511/losiseretupoxetone.pdf
    • http://lokahi.se/uploads/1/3/0/3/130323488/xukozolarobisi_mupagafijonuw_nezozejupipe.pdf
    • http://hostmaster.iwa-building-the-future.com/uploads/1/3/0/8/130874091/9933653.pdf
    • http://catiejoy.com/uploads/1/3/0/2/130274368/b0c5fe7c6.pdf
    • http://numberoneagira.com/uploads/1/3/0/2/130272372/tusikaromalodifigi.pdf
    • http://www.gardenhorsetea.com/uploads/1/3/0/6/130621460/2904b297b20a2.pdf
    • http://pattayaladyboybarsurpriseyourself.com/uploads/1/3/0/7/130775371/4b8fc4c51d7bb0.pdf
    • http://plussizeweddingdressesnewhampshire.com/uploads/1/3/0/5/130590235/10d11f331.pdf
    • http://wedicyl.store/uploads/1/3/0/7/130738697/xigivunoxipujowexu.pdf
    • http://finishlineacademy.com/uploads/1/3/0/3/130323547/1268a27.pdf
    • http://cowboysantiquesandmore.com/uploads/1/3/0/7/130776445/56918.pdf
    • http://swimprofessionals.co.nz/uploads/1/3/0/2/130272432/4103273.pdf
    • http://diamonds-vacation-agency.com/uploads/1/3/0/7/130775531/5205750.pdf
    • http://completehandymaninparis.com/uploads/1/3/0/4/130491488/82433.pdf
    • http://simbachile.com/uploads/1/3/0/5/130589277/6887733.pdf
    • http://www.intentionaluxr.com/uploads/1/3/0/6/130620997/dipix.pdf
    • http://atoz2019.ca/uploads/1/3/0/6/130621457/8429844.pdf
    • http://aivets2018.eu/uploads/1/3/0/8/130873852/2723268.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_off00006bdd.bin
4413ddd0aae2f7b8854da265115dfbba12ad33abd125c99a3b710ec98f3fd5b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDD 7920 bytes

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