Malicious PDF — malware analysis report

Static analysis result for SHA-256 d714fd845340fbdd…

MALICIOUS

PDF

74.5 KB Created: 2021-03-28 10:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd8ca5570a25044c6260951cd30df93f SHA-1: 7509e081bce242fa870b80dc319911992b933dfb SHA-256: d714fd845340fbdda3c6ff211e18f45d9fc21b63ef87a8ac783a0f71e263ba10
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a spam or phishing campaign. The document body, though heavily obfuscated, contains text related to 'Apprendre a dessiner manga livre pdf', which is likely a lure to attract users to click on the embedded malicious URLs. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/award?keyword=apprendre+a+dessiner+manga+livre+pdf
    • https://lefesime.weebly.com/uploads/1/3/4/8/134882546/wuxibifis.pdf
    • https://cdn.sqhk.co/rabataxuvax/aBmhcxE/starz_movies_october_2020.pdf
    • https://tatefelerer.weebly.com/uploads/1/3/5/9/135966089/mopiref.pdf
    • https://sidasunepur.weebly.com/uploads/1/3/6/0/136088000/rukoboduwurunuwozetu.pdf
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/kumojil.pdf
    • https://lidutefavova.weebly.com/uploads/1/3/4/0/134012516/nitelilu-dibuzinakepexu-teriwuxejujisi.pdf
    • https://cdn.sqhk.co/golemejexeno/VyYjigE/street_racing_hd_mod_game_download.pdf
    • http://beautytopshop.site/swearing_is_good_for_you_bookqldzh.pdf
    • https://cdn.sqhk.co/xedaberetaj/cAk5ohf/infection_control_nurse_salary_california.pdf
    • https://cdn.sqhk.co/merabuvi/cCocfzn/colorfit_drawing_coloring_apk.pdf
    • http://rexejirajena.22web.org/82841815541.pdf
    • http://coolvdomaion.online/60049067639r5713.pdf
    • https://siganagimub.weebly.com/uploads/1/3/2/6/132683357/towugemema.pdf
    • https://cdn.sqhk.co/fiseguvugele/jglhdhc/85548713865.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xotomisen/dark_souls_animated_wallpaper_4k.pdf
    • http://bimokiteguzosuw.rf.gd/57833003205.pdf
    • http://lodufuvu.epizy.com/27564716610.pdf
    • https://s3.amazonaws.com/mokamoba/carbon_format_laravel.pdf
    • http://midelex.epizy.com/yajur_veda_sandhyavandanam_in_kannada_download.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e7.bin
f356d7c776618d40f93abd55f71f0b982b3882c8b4c91a0b30e0d6862d9f8ce8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E7 5412 bytes
font_01_sfnt_off0000f540.bin
f125d7b3092df07f430798294eea06432a95ed57c24766b3cd53aac4eeb358ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF540 12140 bytes

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