Malicious PDF — malware analysis report

Static analysis result for SHA-256 79300bf11501bf7c…

MALICIOUS

PDF

74.6 KB Created: 2022-03-30 10:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: cfa98776f9948465f73977a9513dfb81 SHA-1: 0bafa56946dd1ebc019059b0485d2db99c13825e SHA-256: 79300bf11501bf7cde8b4f47e1d6e24cabc84d6bd62e10e035dc4fee5c80bf1a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, indicating it is designed to redirect users to potentially malicious content. The heuristic firings for PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM strongly suggest a link farm intended to distribute malware or facilitate phishing. The embedded JavaScript likely plays a role in the redirection or exploitation process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • 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://lovig.co.za/YmrXLWy8?keyword=whirlpool%20refrigerator%20model%20wrs571cidm01%20ice%20maker%20not%20working PDF link annotation
    • https://wapoduleg.weebly.com/uploads/1/3/4/8/134882123/8343543.pdfIn PDF document text
    • https://pumilisagif.weebly.com/uploads/1/3/4/3/134387603/dapil-sozazoviwurepim-mufoda-bifezujogetivoj.pdfIn PDF document text
    • http://buyuksahinbeyasm.com/depo/files/lajifobexedusuxitofi.pdfIn PDF document text
    • http://salda.se/saldus/kcfinder/upload/files/88836610448.pdfIn PDF document text
    • https://christavedelaar.nl/bestanden/files/kevuturususaninebi.pdfIn PDF document text
    • http://www.bombillasconled.com/archivos/files/wixevo.pdfIn PDF document text
    • http://spiregene.com/image/files/20220330_042401.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16213fd5951958---morasalozibulejoxegomug.pdfIn PDF document text
    • http://inkjetartandimage.com/Uploads/file/mikujewoze.pdfIn PDF document text
    • https://sesogipe.weebly.com/uploads/1/3/1/4/131438268/e6f200f5df762.pdfIn PDF document text
    • https://zugipevewepa.weebly.com/uploads/1/3/1/4/131483317/divigobo_nisonijaju_dasivopodis.pdfIn PDF document text
    • https://detemapibujo.weebly.com/uploads/1/3/4/7/134743672/bozoxamigavudej.pdfIn PDF document text
    • http://dhs-bank-sample.com/app/webroot/js/kcfinder/upload/files/bimiwudoludosedipexasore.pdfIn PDF document text
    • http://pleasanton.com/wysiwygfiles/file/97314104016.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/97101725884.pdfIn PDF document text
    • http://struna.bg/admin/kcfinder/upload/files/99441596414.pdfIn PDF document text
    • https://nojefawagalubab.weebly.com/uploads/1/3/4/2/134266261/nikefazode.pdfIn PDF document text
    • http://totoumi.jp/upload/file/kisifix.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_off0000be11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE11 16804 bytes
SHA-256: d111bb54fc030a9b38a17921e09fa9b5aed08334c7c840e795e30b1a449c45e5
font_01_sfnt_off0000e9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AA 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0001004e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1004E 11596 bytes
SHA-256: ce3f9f3af98263cd52ec697d6a945b9afa65b5184dd7211678427942bb29fde8

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