Malicious PDF — malware analysis report

Static analysis result for SHA-256 37c81ef37250382f…

MALICIOUS

PDF

31.3 KB Created: 2020-06-03 03:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3acad6603f86c397ebf7ad801a55403d SHA-1: 664e1dac8254efa587d292c0c183befe71926526 SHA-256: 37c81ef37250382f16eaf86ff5053e956c953eac294da444967d20666c0e5e63
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, many of which point to domains that appear to be part of a link farm. The heuristic PDF_SEO_LINK_FARM specifically identifies this pattern, suggesting the document's primary purpose is to redirect users to these external sites. The embedded URLs are likely used to distribute further malware or engage in phishing activities.

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://morethanjustaday.com/uploads/1/3/0/4/130476589/130476589.html#casablanca+sheet+music+pdf
    • http://thewell-seasonedwoman.com/uploads/1/3/0/6/130621626/e8295.pdf
    • http://ckpoolparlour.com/uploads/1/3/0/3/130313836/temejivus.pdf
    • http://route6barandbody.com/uploads/1/3/1/8/131856062/c7b8f1a462aa47.pdf
    • http://thecoliseumvoorhees.com/uploads/1/3/0/8/130813730/bonaxa_barepexupirefe_volixemeraleg.pdf
    • http://euro-trader.com/uploads/1/3/0/3/130379370/376244.pdf
    • http://morethanjustaday.com/uploads/1/3/0/4/130476589/terms.html
    • http://morethanjustaday.com/uploads/1/3/0/4/130476589/dmca.html
    • http://morethanjustaday.com/uploads/1/3/0/4/130476589/policy.html
    • https://xemaman.files.wordpress.com/2020/05/22577192756.pdf
    • https://tepaxazif.files.wordpress.com/2020/05/xojefafadiripunomatapat.pdf
    • https://mopomakufi753507622.files.wordpress.com/2020/06/98513759533.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_off00004bff.bin
e3a28d50aabd1651cf3f71b24a2823a159a146779207d86694f6d8156c04fb18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BFF 11560 bytes

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