Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a85b9086d08be3…

MALICIOUS

PDF

54.8 KB Created: 2020-04-09 21:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 910ecdf3aa65c0ded224c67d447ad873 SHA-1: e614b2dea65cddb91ab4b6e4abb7325eaec21b27 SHA-256: e8a85b9086d08be305118f0a9499459491530b115443571b992bfdd88f191c05
82 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO manipulation. The heuristic 'SE_CALLBACK_LURE' indicates that the document is designed to trick the user into calling a phone number, likely for a scam. The embedded URLs are consistent with this delivery method, aiming to host further malicious content or phishing pages.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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://youbrewchicago.com/uploads/1/3/0/4/130483125/130483125.html#what+are+noise+cancelling+headphones
    • http://svsm.nl/uploads/1/3/0/5/130541944/bodoweredav_sekonizi_muxura.pdf
    • http://americandoornyc.com/uploads/1/3/0/5/130588702/womegim.pdf
    • http://urbanvertical.ca/uploads/1/3/0/8/130874064/1551110.pdf
    • http://jpscustardcart.com/uploads/1/3/0/8/130813740/7061751.pdf
    • http://mommylovesandrew.com/uploads/1/3/0/4/130488304/nelasimiti.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_off0000ac3c.bin
703d43bf37a3f23f872fca61aa7791108c0abfff90c4e59981d20c47cfd1a16a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC3C 9180 bytes

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