Malicious PDF — malware analysis report

Static analysis result for SHA-256 603bd3486b60812e…

MALICIOUS

PDF

38.3 KB Created: 2020-03-30 12:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a2b0600057c1156757d5abe61ed03cd1 SHA-1: d7c88271eed9c9586a713307efb858220b88c44e SHA-256: 603bd3486b60812ed8fc47b98f1fca43e30d491572818cf7cfae400086417871
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the sheer volume of outbound links indicates a high likelihood of malicious intent, possibly to distribute further malware or engage in phishing.

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://misssoutheastpageantry.us/uploads/1/3/0/4/130483338/130483338.html#klickitat+county+court+records
    • http://educateforwardca.org/uploads/1/3/0/4/130476062/34684.pdf
    • http://kitcoffee.ca/uploads/1/3/0/2/130289653/vumeponawof.pdf
    • http://liveloveandfaith.org/uploads/1/3/0/5/130550665/9596638.pdf
    • http://michaelswaisgood.com/uploads/1/3/0/6/130604077/1327547.pdf
    • http://driverslandscaping.com/uploads/1/3/1/1/131163723/bilijalejazufovuki.pdf
    • http://thegratefulfed.ca/uploads/1/3/0/5/130539139/pavogumu.pdf
    • http://ahadesigns.com/uploads/1/3/0/4/130488994/88713.pdf
    • http://devinhyltonphotography.com/uploads/1/3/0/7/130739614/fisixilazumagu.pdf
    • http://tigerlilyyogaseattle.com/uploads/1/3/0/4/130483900/tufalakufe-badadekuramuzi-fidulekuvaji.pdf
    • http://charmedave.com/uploads/1/3/0/5/130543141/9cf3a.pdf
    • http://cyber-scribble.com/uploads/1/3/0/2/130271114/lonolor_gediluj_saburax_lorur.pdf
    • http://oneigreen.com/uploads/1/3/0/9/130969816/zatinujefima.pdf
    • http://journey2wholeness.net/uploads/1/3/0/5/130589396/604ebbfa.pdf
    • http://trevoroc.com/uploads/1/3/1/3/131381428/gififuzogokerelolil.pdf
    • http://go1399.com/uploads/1/3/0/6/130620528/gawutis-bared-fiwijevakuv.pdf
    • http://jmeelectricalservicesllc.com/uploads/1/3/0/4/130483390/37074e5b08.pdf
    • http://nangreypottery.com/uploads/1/3/0/7/130775222/dejamefi_vobusuxifukomu_tonofu_zutowubozor.pdf
    • http://releaftherapy.com/uploads/1/3/1/3/131378837/a65524e.pdf
    • http://lbi.rentals/uploads/1/3/0/6/130639305/nokareviporek_milosuzifas_dubevezakuxezu_nopujilole.pdf
    • http://ectravelconsultants.com/uploads/1/3/0/2/130270843/gajoxuvitexivi.pdf
    • http://chinopoolservices.com/uploads/1/3/0/4/130490218/630aca8e3d.pdf
    • http://winczok.com/uploads/1/3/0/5/130588384/2cd2b26a.pdf
    • http://osteo-tarare.com/uploads/1/3/0/5/130590325/145805.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_off00006f12.bin
2e379e408b449656d96eead82eeffcde7a8495f42794e7b90a94a63a9954507e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F12 7240 bytes

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