Malicious PDF — malware analysis report

Static analysis result for SHA-256 962c9b70fa39dcc1…

MALICIOUS

PDF

42.5 KB Created: 2020-04-07 20:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 67aef6e257e18cc6d41c4182d2e4dbf9 SHA-1: 9b3dd7bae703604277cdc5ac6ea083ef7ab29ee5 SHA-256: 962c9b70fa39dcc1135be293f992bc686344f1d99e35495a2a3d364a2f81aa91
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The primary heuristic identified a 'PDF_SEO_LINK_FARM' which strongly suggests this pattern. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods.

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://reconinspects.com/uploads/1/3/0/7/130739517/130739517.html#gbc+emulator+psp
    • http://jojobranding.com/uploads/1/3/0/4/130476594/3309898.pdf
    • http://reinerts.no/uploads/1/3/0/8/130873955/pibagis_fuguf.pdf
    • http://jessinthereal.com/uploads/1/3/0/5/130590525/jaxuzulalumuw_luliwukelorem.pdf
    • http://bluntexpresson.com/uploads/1/3/0/7/130776125/fuvumex.pdf
    • http://upholsteryer.biz/uploads/1/3/0/7/130739936/namape-nomame.pdf
    • http://cbcurrie.com/uploads/1/3/0/5/130546742/3425310.pdf
    • http://autodiscover.sahsg.co.za/uploads/1/3/0/5/130590139/5cd377c86185d3.pdf
    • http://pereboomlaw.com/uploads/1/3/1/3/131380427/dogopixiwavet-mekojow-jutenom-tonokopokelubaz.pdf
    • http://thesapphireschool.com/uploads/1/3/0/9/130969214/binuveji-nidajoxotiba-dezerozo.pdf
    • http://ingrossoborsedisney.com/uploads/1/3/0/8/130815582/gowafulazavu.pdf
    • http://vivaramen.com/uploads/1/3/0/8/130874115/dinomugoxo.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_off00007bf9.bin
287fb7c239e306f8dff888c2089deddd80fad4756e7e46c9b1f8fb4c4f6d7bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF9 8960 bytes

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