Malicious PDF — malware analysis report

Static analysis result for SHA-256 42320a0babb212e2…

MALICIOUS

PDF

38.2 KB Created: 2020-06-11 22:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05b9417e2491379ffa0045551f560e74 SHA-1: 7e9cdf4af5893b0ea9c842d634245eb7010cc51d SHA-256: 42320a0babb212e2ae320c41b32f45aec5c8466f20ad832a1e5e2588e5c13636
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to domains that appear to be part of a link farm. The document body, though partially corrupted, contains a reference to an eyeshadow tutorial, suggesting a lure to attract users to these malicious sites. The heuristic PDF_SEO_LINK_FARM firing strongly indicates this is a malicious SEO-driven link distribution scheme.

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://triplex-arrow.com/uploads/1/3/0/5/130588849/130588849.html#mac+woodwinked+eyeshadow+tutorial
    • http://avmk9wfa.com/uploads/1/3/1/1/131163705/julemu-xisodujikunokep-juwite.pdf
    • http://egophenomena.com/uploads/1/3/0/4/130477566/gojufosilim.pdf
    • http://eatloveys.com/uploads/1/3/0/3/130313103/93029b91e58a.pdf
    • http://perillianconsulting.com/uploads/1/3/1/1/131164249/9225614.pdf
    • http://cpanel.thecoolingrackcustomcakes.com/uploads/1/3/0/7/130775722/gufevefapisa_mujejutiw.pdf
    • http://personaltrainingexperience.com/uploads/1/3/1/3/131380845/zutomum-burewap-zapodudezom.pdf
    • http://housingfirstdevelopment.org/uploads/1/3/0/3/130324119/7473768.pdf
    • http://mta-sts.mail.gospeltherapy.com/uploads/1/3/0/8/130874680/cd137f5e82f9.pdf
    • https://lotodirod.files.wordpress.com/2020/06/83039563355.pdf
    • https://luxotamataxo.files.wordpress.com/2020/06/sedasolugajidozorejekig.pdf
    • https://gakesikaloli.files.wordpress.com/2020/06/dotefizap.pdf
    • https://petapelogidu.files.wordpress.com/2020/06/zavejubotodujedesiz.pdf
    • https://lewuteb.files.wordpress.com/2020/06/lefobetudubupoviji.pdf
    • https://xaxaredim.files.wordpress.com/2020/06/nukarivawipofulep.pdf
    • https://zirazeru.files.wordpress.com/2020/06/47086261833.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_off00005db2.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB2 1800 bytes
font_01_sfnt_off0000663e.bin
17aad61edebf7da00d8f4b9b5162108eeac5b069337206eb45d9954ad61a0ff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 10752 bytes

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