Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22be5df29a689c3…

MALICIOUS

PDF

63.5 KB Created: 2020-03-27 05:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bd11f6558abd2dfe97641ac8616c2645 SHA-1: 5254a8a62bb73bbd508b7d04e86e16b5083c3aee SHA-256: d22be5df29a689c370087a7ccd258a42d7d1fff803b070f9846fa716a0de1843
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDF files, indicating a link farm for SEO manipulation or to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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://aztimberflooring.com/uploads/1/3/0/6/130621900/130621900.html#chapter+6+process+costing+test+bank
    • http://tenayatechnologies.com/uploads/1/3/1/4/131407138/4516297.pdf
    • http://utopiamind.com/uploads/1/3/1/3/131383674/giwile_niboluwugiminak_zegepileboputo.pdf
    • http://aspencovecondo.com/uploads/1/3/0/8/130813966/pexuferugubaz.pdf
    • http://danseusesdor.com/uploads/1/3/0/2/130272850/f7eb54d4efc.pdf
    • http://channinggroupllc.com/uploads/1/3/0/5/130589123/85ec0242.pdf
    • http://fatunclefarms.com/uploads/1/3/0/9/130969264/2871564.pdf
    • http://www.seguraharvesting.com/uploads/1/3/0/6/130639408/kuzuvugosi.pdf
    • http://coachs7375.com/uploads/1/3/0/6/130604620/5ce815dab.pdf
    • http://poopapaloosa.com/uploads/1/3/0/3/130379711/vuxebilefiko-rijevun-zalux.pdf
    • http://bridge.vandenbergattorney.co.za/uploads/1/3/0/5/130590291/bapavolubu.pdf
    • http://mtziongoshen.church/uploads/1/3/0/6/130620327/tiwafikijibit.pdf
    • http://mail.photopozza.com/uploads/1/3/0/7/130775838/vokikodiweragew.pdf
    • http://ctkyakima.com/uploads/1/3/0/7/130775279/kazow_tivudag_leberod_fojulutusuw.pdf
    • http://kellyhunt.net/uploads/1/3/0/6/130621897/tebesipuxigitab-pojof-segofoforeteba.pdf
    • http://northwesterntaekwondo.com/uploads/1/3/0/6/130604408/wedut.pdf
    • http://mobilityfamily.com/uploads/1/3/0/6/130620679/latijonode_wakub.pdf
    • http://www.leclauzet.com/uploads/1/3/0/4/130489431/1338777.pdf
    • http://childrenrspecial.net/uploads/1/3/0/6/130621071/voraf-gemor-pujaf-dakute.pdf
    • http://swflhandyman.com/uploads/1/3/0/8/130874231/kegegugafowu-morilegi.pdf
    • http://mta-sts.mail.urskamajdic.si/uploads/1/3/0/2/130289756/3529777.pdf
    • http://www.awakenedpaths2.com/uploads/1/3/0/6/130621714/7390600.pdf
    • http://snorkelprep.com/uploads/1/3/0/7/130739775/medototugadamasutaj.pdf
    • http://mygosolartoday.com/uploads/1/3/0/6/130603690/mivisad-zesejikafowiziv-pakupujelawame.pdf
    • http://opengiusergroup.com/uploads/1/3/0/5/130551417/lemejudagu.pdf
    • http://chetnamahajan.com/uploads/1/3/0/5/130540619/7670190.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_off0000cf46.bin
d4503a16acea00e087331f9fad71d707da5c591b04bbbd2c94a947a98dad420c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF46 8424 bytes

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