Malicious PDF — malware analysis report

Static analysis result for SHA-256 4148007176f304cf…

MALICIOUS

PDF

39.1 KB Created: 2020-05-16 03:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 902083edadfc53ab35661868998a55cd SHA-1: 5aa669607992bcd33dc1ca23d6ebce1e821f3e70 SHA-256: 4148007176f304cf12745e72e09dcc500c5f6e4a20cb999b10e304964cb65ae3
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to other PDF files, suggesting a link farm or SEO poisoning tactic. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content likely prompts the user to install a browser extension or update. This is a common social engineering technique to trick users into downloading malicious software or revealing credentials. No scripts were extracted from this sample, limiting further analysis of its direct execution behavior.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://puttwellgolf.net/uploads/1/3/0/6/130604314/130604314.html#best+adblock+for+android+tablet
    • http://osidetiger.com/uploads/1/3/1/4/131453276/wezozevuvoxosomakojo.pdf
    • http://redoandrenewlv.com/uploads/1/3/0/2/130287401/5646241.pdf
    • http://eco-techsolution.com/uploads/1/3/0/6/130620228/6e94662d710fd.pdf
    • http://stephengilardi.com/uploads/1/3/0/9/130969726/3563030.pdf
    • http://horseford.org/uploads/1/3/0/5/130588509/9761483.pdf
    • http://clipartalacarte.com/uploads/1/3/0/7/130775682/9234997.pdf
    • http://theedladder.com/uploads/1/3/0/4/130483480/4326476da.pdf
    • http://osullivanfitness.com/uploads/1/3/0/5/130551001/rudulegitife-vigezulidaf-butifozej-sewinaximexub.pdf
    • http://seniorcordfree.com/uploads/1/3/0/3/130379676/zedosizovume_farutatudat.pdf
    • http://killtheherogame.com/uploads/1/3/0/3/130323656/c66a1182d3.pdf
    • http://jarrods.org/uploads/1/3/0/8/130813883/jenijuwawa.pdf
    • http://probateinsacramento.com/uploads/1/3/0/6/130639428/4206358.pdf
    • http://d3alder.com/uploads/1/3/0/5/130542859/buzagenu_leravodu.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_off00006dcf.bin
dea79e1b87e2878f60932733010d56db1cea0d22f9b4cca3ab0d86f7981faab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCF 10444 bytes

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