Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3fdb1e924296e6…

MALICIOUS

PDF

33.2 KB Created: 2020-05-15 15:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 695d686ec1c70dfbc841b67562a40537 SHA-1: 4b60510a8bcbc9bd40603c77d435165ee39f35c6 SHA-256: 6e3fdb1e924296e6bea166750068ef54d41fb3981ccfcebd0b1e47001c13d82e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary purpose appears to be directing users to a multitude of websites, likely for SEO manipulation or to host further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting deeper analysis of the immediate intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://withlove-services.com/uploads/1/3/0/7/130776250/130776250.html#2019+monthly+calendar+template+word+monday+start
    • http://rhirebllion.com/uploads/1/3/0/3/130323210/regomewabuver.pdf
    • http://romneypfeiferlaw.com/uploads/1/3/0/2/130272548/7776048.pdf
    • http://sparxelectricalcontractors.com/uploads/1/3/0/6/130621312/3872968.pdf
    • http://anitaniebuhresthetician.com/uploads/1/3/1/0/131070009/05e9ca50ad52.pdf
    • http://dariobartoli.com/uploads/1/3/0/7/130775551/9523a.pdf
    • http://vinyasawithbenandrianna.com/uploads/1/3/1/6/131636664/dovuxew.pdf
    • http://beckmanappraisals.com/uploads/1/3/1/4/131406698/fbf81f4775be9.pdf
    • http://cherylanntaylor.com/uploads/1/3/0/4/130490476/sofaburafetufoz.pdf
    • http://melissafinchdesigns.com/uploads/1/3/0/2/130271211/sogesiwiperibe-nugukadinexuga-wamutuba-zafan.pdf
    • http://jechercheunmecanicien.com/uploads/1/3/0/4/130476564/lewalene.pdf
    • http://globalkhansulting.com/uploads/1/3/0/7/130740222/nanaw.pdf
    • http://mancinos.menu/uploads/1/3/1/4/131483126/wewarademuguzas.pdf
    • http://handsignierte-buecher.net/uploads/1/3/1/0/131069893/dfccc7ba28b1.pdf
    • http://kinkshairwinchmorehill.com/uploads/1/3/1/6/131637247/nifutatez.pdf
    • http://mainstreetmystery.com/uploads/1/3/1/4/131437100/fubamew.pdf
    • http://chitchatthisthat.com/uploads/1/3/0/5/130589283/jelulinowinopel.pdf
    • http://charlotteinnyc.com/uploads/1/3/1/1/131164318/3be61d3bf.pdf
    • http://shanghaigourmet.us/uploads/1/3/1/3/131382028/8636556.pdf
    • http://butwhyreally.com/uploads/1/3/1/4/131407051/zizakaboxe.pdf
    • http://dbgroundworks.org/uploads/1/3/0/5/130589269/358f8bda073381d.pdf
    • http://leslie-marshall.com/uploads/1/3/0/7/130740612/rusukevako.pdf
    • http://adamseve.net/uploads/1/3/0/4/130436159/f9cbc9c1ed24.pdf
    • http://elementsofstylegame.com/uploads/1/3/0/7/130776823/xekarifag_mozomu_ralifenagekoz.pdf
    • http://xparaphernalia.com/uploads/1/3/0/2/130270971/witipikilifupaw.pdf
    • http://jimmylittlewood.com/uploads/1/3/0/4/130476574/8697813.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005773.bin
33060d98b6b4f32230c81ce66a0efa8738fa208247f3c7c6a6a58f6c41d6a69a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5773 9556 bytes

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