Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa16c3896a392fca…

MALICIOUS

PDF

45.3 KB Created: 2020-04-02 16:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e3dc32239681a0e5d34705cc78a3eb9b SHA-1: 4263231c41e91133deb799f164b4d06e4ccf9bb0 SHA-256: fa16c3896a392fca2f542ed6f02f357547b3e70f556909e965cfc8236e62f173
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body contains text related to 'Rita pmp 9th edition pdf' and authoring application details, suggesting a lure to potentially malicious or SEO-manipulated content.

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://floatconsultants.com/uploads/1/3/1/3/131379371/131379371.html#rita+pmp+9th+edition+pdf
    • http://stresslesssecrets.com/uploads/1/3/0/2/130288720/8241093.pdf
    • http://missfrancinedayschool.com/uploads/1/3/0/5/130540033/limoralevevos.pdf
    • http://maisondevacances-andalousie.com/uploads/1/3/0/7/130776159/3906b06.pdf
    • http://psychosaysapparel.com/uploads/1/3/0/7/130775362/wojixe_koziviri_fimilew.pdf
    • http://govbridge.co/uploads/1/3/0/2/130289620/sufazuz.pdf
    • http://blueconomyconsulting.com/uploads/1/3/1/4/131407815/da53fc973ec09c4.pdf
    • http://walk-cards.com/uploads/1/3/0/6/130604074/1093856.pdf
    • http://positivelyerath.com/uploads/1/3/1/1/131164417/zipakinevizisit.pdf
    • http://richmondvatowing.com/uploads/1/3/0/3/130313494/duvopoboko.pdf
    • http://monkeesconcerts.com/uploads/1/3/0/6/130639787/6aae23530e05.pdf
    • http://globalys.org/uploads/1/3/0/3/130313500/7105277.pdf
    • http://adventurefamilytravels.com/uploads/1/3/0/5/130542729/1f8a2c6.pdf
    • http://ellenleventry.com/uploads/1/3/1/0/131070637/tixubuxuvutik-zajipevuwerilet-lapev.pdf
    • http://footecontractingllc.com/uploads/1/3/0/6/130621532/kijorom.pdf
    • http://716fpv.com/uploads/1/3/0/3/130379081/2960627.pdf
    • http://distracted24-7.com/uploads/1/3/0/6/130621938/6488813.pdf
    • http://pastorjustindean.com/uploads/1/3/0/4/130476458/teserojigaf.pdf
    • http://hostmaster.classiccars.global/uploads/1/3/0/4/130489475/xewavomikup-garaj-gojipuzu.pdf
    • http://cincyrealty.net/uploads/1/3/0/6/130621355/rigawirewo.pdf
    • http://janwindle.com/uploads/1/3/0/8/130874681/kuvinewinojo_binedaropelavar_zijokukuge.pdf
    • http://pettieranch.com/uploads/1/3/1/1/131163737/4418532.pdf
    • http://tonysconstructioninc.com/uploads/1/3/0/4/130489410/7697110.pdf
    • http://chavezforarizona.com/uploads/1/3/0/3/130313176/f45f2a3d2.pdf
    • http://thehbcuroundtable.com/uploads/1/3/0/4/130476014/3aec851f.pdf
    • http://panaceanova.ca/uploads/1/3/0/4/130435682/4302076.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_off000086bc.bin
1c34890c7e0f30359ad878de8f2abe0c99cb62be15087ab8d31e9b0e6ce69c94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86BC 8680 bytes

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