Malicious PDF — malware analysis report

Static analysis result for SHA-256 b922386cbc07aff9…

MALICIOUS

PDF

32.0 KB Created: 2020-04-20 14:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 52974d70b5d996102ab7585c24b48489 SHA-1: 2a515f6f68c53edcf68ed041b6213a20bf8bc52d SHA-256: b922386cbc07aff98518ba271d443dcbf6a94bead921603d12319a710c464c28
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The document body text is heavily obfuscated and appears to be a mix of metadata and garbled content, making it difficult to ascertain a specific lure. No scripts were extracted from this sample. The primary indicators are the numerous PDF_SEO_LINK_FARM and PDF_URI heuristic firings pointing to a diverse set of domains.

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://iavnt.com/uploads/1/3/0/6/130621664/130621664.html#speak+boastfully+crossword+answers
    • http://warehouseeight.com/uploads/1/3/0/2/130288932/gabofowupisebapa.pdf
    • http://bertobuiltllc.com/uploads/1/3/0/4/130476129/vasan.pdf
    • http://jennagrober.com/uploads/1/3/1/3/131398025/womogig-fajewufi-zotubewux-bamuz.pdf
    • http://kellyannmeehan.com/uploads/1/3/0/5/130550920/tovoriwanu.pdf
    • http://victorolawuni.com/uploads/1/3/0/4/130476288/vamafatotu_temozav_mananosejepob.pdf
    • http://jdjrplastering.com/uploads/1/3/0/4/130483527/c31435b1bb792a.pdf
    • http://salusmentalhealth.com/uploads/1/3/0/2/130289161/muvivapuzebet.pdf
    • http://shearerdesigns.net/uploads/1/3/0/6/130621404/pixogen.pdf
    • http://thechurchcfo.com/uploads/1/3/1/4/131438767/tetinof-siguv.pdf
    • http://little-pearls.nl/uploads/1/3/0/9/130969624/xidenur-jesegivove-sugowikixato.pdf
    • http://jubileeministries.net/uploads/1/3/0/8/130814591/4f4efad.pdf
    • http://communitassalud.net/uploads/1/3/0/3/130379681/gibut-wasozeser.pdf
    • http://lakecityfamilytherapy.com/uploads/1/3/0/5/130588731/0bc5b9d236112.pdf
    • http://delicado.shop/uploads/1/3/1/0/131070538/lesefixisu-vofovar-fakido.pdf
    • http://babydollcarek.com/uploads/1/3/0/5/130544754/5052184.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_off00005669.bin
d28f73365c77637a93393f459e663275a553e46bc458ace8b53813dfcc234e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5669 7452 bytes

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