Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f2509476a78b74…

MALICIOUS

PDF

35.2 KB Created: 2020-04-30 12:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fc523ef3451992df83c4ff1a6e8ec41d SHA-1: 9ca944ad57906c00ddc8ec0ab4e9bed41e2d081a SHA-256: e7f2509476a78b74ab332538102b021564f2c68d63e881a161409448fe7ab078
70 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 similarly structured URLs on different domains, suggesting a link farm or SEO poisoning tactic. The document body, though partially corrupted, contains text related to a 'free sheet music writing program' and a URL, indicating a lure to a potentially malicious resource. The presence of numerous external PDF links and a call-to-action phrase further supports a malicious intent to redirect users to external content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://stratford-hvac.com/uploads/1/3/0/6/130620607/130620607.html#free+sheet+music+writing+program
    • http://dnrna.com/uploads/1/3/0/2/130291822/filejow.pdf
    • http://janeburnettmedia.com/uploads/1/3/1/3/131378975/3cbc7aef66aa.pdf
    • http://joelonsdale4ohlone.com/uploads/1/3/1/4/131408245/800dd5.pdf
    • http://classof61.ca/uploads/1/3/0/5/130539897/5450950.pdf
    • http://reachbeyondcounselingcoaching.com/uploads/1/3/0/6/130620712/1030265.pdf
    • http://yaldocargo.com/uploads/1/3/1/3/131383751/05973ecb8bd.pdf
    • http://sarahirani.com/uploads/1/3/0/2/130287283/gabubibuvisitif_dosexi_fiberas_beropaxoxile.pdf
    • http://filmkiln.com/uploads/1/3/1/6/131637686/31995c6d9363.pdf
    • http://danielscaribbeankitchen.com/uploads/1/3/0/7/130739274/lajiwukabexi.pdf
    • http://tjmartialarts.com/uploads/1/3/0/8/130814342/67e15.pdf
    • http://misskurtze.com/uploads/1/3/0/4/130489725/5fe57bcd379743c.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_off0000625a.bin
90cb85d3266c5503563e86508cf07f83a3be588b3d2c5dab8da0e7c432254d02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x625A 7460 bytes

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