Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03208acde71e86d…

MALICIOUS

PDF

74.8 KB Created: 2021-04-01 05:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b526b48447713a90bf71bef89b7a56c8 SHA-1: 1299420efc1cc6093118b44e8707be76591d6cd5 SHA-256: d03208acde71e86d286a29abf6c83065ff90201b2565940ea4b6d98fceb0219f
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://soxebez.ru/award?keyword=definition+of+financial+crime+pdf PDF link annotation
    • http://christinaanddavid2019.com/when_college_spring_break_2020plwr7.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisofokox/igehdgi/okay_troll_meme_gif.pdfIn PDF document text
    • http://daludaja.getenjoyment.net/32596411858.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/ciejcgf/51193720577.pdfIn PDF document text
    • http://deemonatrafik.xyz/garujulixapejisimoguk6r9yt.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/samsung_camcorder_hmx-f90_manual.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/moregisikexufu.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/7046033470.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/DIr1gjm/jepex.pdfIn PDF document text
    • http://werojati.getenjoyment.net/vukosilapux.pdfIn PDF document text
    • http://lawexape.mygamesonline.org/katalog_ikea_2020_indonesia.pdfIn PDF document text
    • https://cdn.sqhk.co/vilevefe/J2jdGjd/toolbox_talks_construction_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/bjbibgg/xejupidetowogevukowoje.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/DIWppjj/download_survive_wilderness_survival_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/94409532705.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/psalm_2324_1-6.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/mobog.pdfIn PDF document text
    • http://kimawawasero.onlinewebshop.net/geruxibifonavuvidevukija.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/wrangler_performance_pants_walmart.pdfIn PDF document text
    • http://bugenuvumap.atwebpages.com/4763364639.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A2 5124 bytes
SHA-256: 68cae1629e58753705d90242496121f8085980e0c926a96289d4f4e628a3b6d2
font_01_sfnt_off0000fa01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA01 10540 bytes
SHA-256: 692cfc3f9e570ff71291bfbbd86a5882f68d54e82ce9caa9447bc5b872b843be

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