Malicious PDF — malware analysis report

Static analysis result for SHA-256 4457e35279f0e203…

MALICIOUS

PDF

192.8 KB Created: 2022-04-01 13:35:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: d5220f174c75ef6e339d2412e923378b SHA-1: 91a39b1246aee6f1a8e674e9c989814c1bb7c366 SHA-256: 4457e35279f0e2039246cd24b63316dc74493b1e73d3e9ec02ed1d60bba82101
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to obfuscate the malicious links or to perform further actions upon visiting them.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://podar.co.za/YmrXLWy8?keyword=what%20does%20qualitative%20analysis%20mean%20in%20sociology PDF link annotation
    • https://jeduruletezebu.weebly.com/uploads/1/4/1/2/141260367/zufutuse.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16245551e962a1---fegafer.pdfIn PDF document text
    • https://igmof.com/admin/js/kcfinder/upload/web_file_ig_1/files/gunenitulibugobikapakaj.pdfIn PDF document text
    • http://extrastyle.ee/ckfinder/userfiles/files/65370207117.pdfIn PDF document text
    • https://hantverksakuten.se/ckfinder/userfiles/files/pokigesosaji.pdfIn PDF document text
    • http://synergienetwork.net/userfiles/file/dozobagovito.pdfIn PDF document text
    • http://thaicockstar.com/ckfinder/userfiles/files/32580974874.pdfIn PDF document text
    • https://pristineleather.com/userfiles/file/tolamowositixusili.pdfIn PDF document text
    • https://dizazulebor.weebly.com/uploads/1/3/4/8/134882555/zogapu.pdfIn PDF document text
    • http://www.muen-roaster.com/img/ck_img/files/62831287834.pdfIn PDF document text
    • http://amandatour.ru/js/ckfinder/userfiles/files/70417126956.pdfIn PDF document text
    • http://www.studioamorosi.com/notizie/allegati/37389625120.pdfIn PDF document text
    • https://pavenepono.weebly.com/uploads/1/3/1/3/131383439/3145219.pdfIn PDF document text
    • https://lijotabele.weebly.com/uploads/1/3/4/0/134016876/a95f227.pdfIn PDF document text
    • http://xn--o79av69abka850ab6c.com/upload/file/202202041657427674.pdfIn PDF document text
    • https://tatedamemod.weebly.com/uploads/1/3/0/7/130739791/fanuneki.pdfIn PDF document text
    • https://fofoxugijajeb.weebly.com/uploads/1/3/4/7/134729320/f5e93bcf2896e60.pdfIn PDF document text
    • http://kama-msm.ru/storages/file/nomiriv.pdfIn PDF document text
    • http://sv-orhidea.ru/upload/files/99963233859.pdfIn PDF document text
    • http://domplus.su/userfiles/files/17343317790.pdfIn PDF document text
    • http://jeanchapleau.com/userfiles/file/13799988320.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28E73 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002a68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A68A 11136 bytes
SHA-256: deb944a3401f0791d9f0ec6c72f61913272487146dcca0ebc64b3e48e40cdd8e
font_02_sfnt_off0002bfdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFDF 20556 bytes
SHA-256: 15e4f9635d62011956644d8ff9082923785aba38f64c59fe4568eb7085f186d2