Malicious PDF — malware analysis report

Static analysis result for SHA-256 989abfbff0ce1ac7…

MALICIOUS

PDF

47.9 KB Created: 2020-03-10 04:01:11 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e87ecae1828eb7f0c050ce2f58cd0b57 SHA-1: 943387a58ac65e1514c56a91c83c98d5c98a95ac SHA-256: 989abfbff0ce1ac7ee5c7c9225772ed09cdedc38ec1b46198093aa6e6140adf3
96 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, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains a URL that points to a website related to ancient Mesopotamia, suggesting a potential lure. The primary attack pattern involves redirecting users to numerous external sites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://science-related-current-event.anyball.info/uploads/1/3/0/5/130538891/130538891.html#sumerian+city+state+in+ancient+mesopotamia
    • http://effectivechangemanagement.net/uploads/1/3/0/6/130639221/fuxezabunije.pdf
    • http://trevier.net/uploads/1/3/0/6/130621918/0b86e7c2bbf93.pdf
    • http://twooneninedesignsandart.com/uploads/1/3/0/6/130604980/xotonaxurisamad-gupizafona.pdf
    • http://thedukeofcumberland.co.uk/uploads/1/3/0/6/130605442/derulelisik-roxafiregudew-kapewupukagatav-lujizoninumaru.pdf
    • http://northcoastwalkingtours.com/uploads/1/3/0/6/130604079/vidulusenekuv-sosukisawebow-revor.pdf
    • http://subcontext.net/uploads/1/3/0/6/130621310/5097616.pdf
    • http://www.eadmed.com/uploads/1/3/0/3/130313458/2852079.pdf
    • http://74-123-75-101.mgwnet.com/uploads/1/3/0/7/130776873/nojebiborewalegapu.pdf
    • http://oslorelocation.net/uploads/1/3/0/2/130289736/xusarepoz-semoje.pdf
    • http://www.salinaschurchofgod.org/uploads/1/3/0/2/130289681/sawegezubefo-wakisaporox.pdf
    • http://simonraines.com/uploads/1/3/0/4/130488934/nikakofoxa.pdf
    • http://andantemk.org/uploads/1/3/0/5/130551677/9916235.pdf
    • http://goodlandwine.com/uploads/1/3/0/7/130776085/rufenuzirira_zevijupegiv_deserov_nuvuzupirapun.pdf
    • http://gmchamberpatrons.com/uploads/1/3/0/2/130289756/90caddbe001.pdf
    • http://hostmaster.olalavn.com/uploads/1/3/0/6/130639630/c6f5998.pdf
    • http://davidpray.com/uploads/1/3/0/4/130483428/lejejudamurizafi.pdf
    • http://christiewilsonpsychotherapy.com/uploads/1/3/0/5/130551343/0a4d34fd1d4.pdf
    • http://incrediblemeatdeals.com/uploads/1/3/0/5/130588343/wezixujumof.pdf
    • http://hiiloveyoutoo.com/uploads/1/3/0/9/130969323/zofaz.pdf
    • http://www.nationaldebtmgmt.com/uploads/1/3/0/7/130775339/jixalebisim.pdf
    • http://designisnotmagic.com/uploads/1/3/0/3/130379222/kawunotetojo-lemiberarunuf.pdf
    • http://www.jackofall.ca/uploads/1/3/0/8/130874431/rewozitixexofivi.pdf
    • http://www.jackofall.ca/uploads/1/3/0/8/1
    • 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_off000091f5.bin
3cc3c3468416a4b26c10990eaa1213a3e400899fcf3eba4caa9714f11ba4c0c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91F5 8520 bytes

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