Malicious PDF — malware analysis report

Static analysis result for SHA-256 510dd38f3dcd979f…

MALICIOUS

PDF

33.2 KB Created: 2020-04-15 04:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8f7af0449a77618e96777f9ad51123ad SHA-1: c30a4a957ec15163b4f9230a51ea5b1253aee88d SHA-256: 510dd38f3dcd979fe022cfa4e1ab3124609e7fa333c2ef39f1a4dece1edfb90f
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The 'PDF_SEO_LINK_FARM' heuristic firing indicates a mass of external links, with the primary domain being cairobritishcollege.com. The document body contains text related to 'Tektronix oscilloscope 475 manual', which appears to be a lure to attract clicks on the embedded links. No scripts were extracted, and the primary threat appears to be the redirection to potentially malicious external sites.

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://blastickelectric.com/uploads/1/3/0/3/130323250/130323250.html#tektronix+oscilloscope+475+manual
    • http://cairobritishcollege.com/uploads/1/3/0/4/130476272/bifedomam_wipigif_latulateteroxo.pdf
    • http://elizebethjmbaker.com/uploads/1/3/0/6/130621195/digit.pdf
    • http://bullsteamstore.com/uploads/1/3/1/0/131071290/biralofixakeporelul.pdf
    • http://miomusic.com/uploads/1/3/0/5/130550960/zisijozo.pdf
    • http://thebritishhotel.net/uploads/1/3/1/4/131437850/niwumopugaperekaleja.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_off00005b55.bin
de53742c79560d2bad7b2e60dc0f163ac27c69106f17eee2808ff8693c61d248		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B55 7648 bytes

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