Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20507375a0a1b76…

MALICIOUS

PDF

43.9 KB Created: 2020-03-08 09:17:38 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 025d3c26f6b45cd398fe367887f3f818 SHA-1: 75a779e9d2c44b7565a66e9a954837bdb4ba6a94 SHA-256: a20507375a0a1b767e9b64935f5067e69afd532334165afc34ebbbf06c6ecd90
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, flagged as a link farm. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains URLs that are also present in the heuristic findings. The primary attack pattern appears to be directing users to a network of external sites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://test.ladse.org/uploads/1/3/0/6/130620467/130620467.html#express+js+tutorial+pdf
    • http://moorestrom.com/uploads/1/3/0/8/130814995/xalan.pdf
    • http://visitboalsburg.com/uploads/1/3/0/6/130639093/9d9b33e1a3e4fa.pdf
    • http://www.livinghappyrr.com/uploads/1/3/0/6/130639215/xevusoz-vasawejil.pdf
    • http://sh8kmusic.com/uploads/1/3/0/6/130621651/xajasewovaza.pdf
    • http://autodiscover.joliehoang.com/uploads/1/3/0/3/130323789/99a4bf9c1874.pdf
    • http://npreap.com/uploads/1/3/0/8/130874050/5488541.pdf
    • http://www.oscourse.co.uk/uploads/1/3/0/2/130288364/e85bb72f145d.pdf
    • http://www.kauniquedesigns.com/uploads/1/3/0/5/130588735/8260684.pdf
    • http://circlecityhomebuyers.com/uploads/1/3/0/3/130379804/nudisafuruj_gikirerotejapuz_dazexositiwak.pdf
    • http://annachristiani.com/uploads/1/3/0/5/130551019/26c131cb.pdf
    • http://lockton.services/uploads/1/3/0/2/130288410/vofomugu.pdf
    • http://misfitsagony.com/uploads/1/3/0/6/130605306/7060820.pdf
    • http://naturalpipes.com/uploads/1/3/0/2/130288626/nigizufazitexi.pdf
    • http://pabloescoparts.com/uploads/1/3/0/8/130874437/8441661.pdf
    • http://pblepcu.sites.logojoy.com/uploads/1/3/0/8/130815192/7576aa03784.pdf
    • http://www.affordablevinylrepair.com/uploads/1/3/0/9/130969854/8451051.pdf
    • http://www.objectivewithlens.com/uploads/1/3/0/3/130323659/xebawipasogavig-wipapero-sokisisufot.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8f.bin
be4e382fee0dd4adbafa901f8c60653182587c25e266eb58df8cc3d4bf738811		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8F 8364 bytes
font_01_sfnt_off00008cee.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEE 16204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.