Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c7235cbf626ae7a…

MALICIOUS

PDF

42.9 KB Created: 2020-04-02 05:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 27cfc362b1e019bdeea6fe0f81b37601 SHA-1: 1c1a850a19cabd8142b1b29321e338b43b91d79c SHA-256: 0c7235cbf626ae7a62c4729dd1ff1a0cc15a5478c5311e902858cc7e38be344f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links likely lead to websites designed for SEO manipulation or to distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a malicious intent to redirect users to potentially harmful sites.

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://bestmarine.de/uploads/1/3/0/5/130590463/130590463.html#the+cosmic+secret+full+movie+free+online
    • http://americantrafficcontrol.net/uploads/1/3/0/4/130436224/lokabuduf-saxuziwiv-bobuxudivuxutu-wesod.pdf
    • http://especialpack.com/uploads/1/3/0/7/130775016/ranibise_rodizegajogu_pevudujutoxer.pdf
    • http://tagustimes.com/uploads/1/3/0/9/130969368/dukivixugu.pdf
    • http://yourchartersoffreedom.com/uploads/1/3/0/6/130604741/mawomuzotowamiv.pdf
    • http://rozenblatrealtygroup.com/uploads/1/3/0/8/130815140/sikejirupelaj.pdf
    • http://landsofparadise.us/uploads/1/3/0/5/130544702/pexabuginupo.pdf
    • http://wildlife-cameraman.com/uploads/1/3/0/7/130739663/2d799c25b897727.pdf
    • http://savorfinance.com/uploads/1/3/0/4/130478314/jevetojofa_vupivakijasa_xagazoderipeti_warutesoxotepeb.pdf
    • http://alexcarson.net/uploads/1/3/0/6/130603922/woropaminotesevugala.pdf
    • http://thedeepcleaningstudio.com/uploads/1/3/0/6/130621084/tekinaj.pdf
    • http://inovattiobpo.com/uploads/1/3/0/6/130639235/xomomukatidagamaxu.pdf
    • http://ukuhuisabc.com/uploads/1/3/0/4/130476816/295860.pdf
    • http://ulcergardforhorses.com/uploads/1/3/0/5/130590279/c211d.pdf
    • http://emilypears.com/uploads/1/3/1/4/131438353/gedirizosesof.pdf
    • http://carpetcleanersofgreenville.com/uploads/1/3/0/3/130379457/xitubapamupuk.pdf
    • http://allisonevansphd.com/uploads/1/3/0/7/130740536/wikafejokubiluwo.pdf
    • http://catamaranadastra.com/uploads/1/3/1/0/131070089/javawegodawut_mesogakofi_gowidepadoz_jotajasikaj.pdf
    • http://h2designstudios.com/uploads/1/3/0/5/130589007/8364177d.pdf
    • http://humanonaplanet.com/uploads/1/3/0/7/130774990/2063922.pdf
    • http://aimeassociation.org/uploads/1/3/0/8/130814980/vinawigezakes.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_off00007de1.bin
b786b1892b33ab312b0f8877dd9574a833837bc6acb928387e11c12be123b808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 8300 bytes

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