Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d6f30b07e8003d…

MALICIOUS

PDF

273.5 KB Created: 2022-01-20 11:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 55521645a47e61423d36153310c25a7e SHA-1: 11d6473766fe6e4892d4727219d1ac22a79a038d SHA-256: c5d6f30b07e8003dba31ddba5c6015954e9c78e96698bd35c1db257b82931288
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded JavaScript and a callback phishing lure, indicating an attempt to deceive the user into contacting the attacker. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or social engineering purposes. The embedded JavaScript may be used to further obfuscate the malicious payload or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9501

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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 http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/6807645696.pdf In PDF document text
    • https://gbagencement.fr/uploads/file/2051082275.pdfIn PDF document text
    • http://sun-green.eu/ckfinder/userfiles/files/mufozo.pdfIn PDF document text
    • http://geluidsadviesnederland.nl/ckfinder/userfiles/files/46834652808.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/38932769618.pdfIn PDF document text
    • http://naturpix.ch/cmsimages/file/33053707921.pdfIn PDF document text
    • https://dicky.hu/contentupload/file/kipokuresebasaxira.pdfIn PDF document text
    • http://immobilier-valence-agen.com/userfiles/file/82521046599.pdfIn PDF document text
    • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/bajulopomuzulilufivifaxe.pdfIn PDF document text
    • http://zpb-maciejewski.pl/upload/fck/file/69469721773.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/78610263846.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c2574d24117---26297851561.pdfIn PDF document text
    • http://www.pranabkumar.com/fckimages/file/4797089200.pdfIn PDF document text
    • http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/wofow.pdfIn PDF document text
    • http://eapver.com/upload/ckimg/files/202111240657477820.pdfIn PDF document text
    • https://www.danielbarboza.com.br/v2/meuAdmin/inclusos/plugins/ckeditor/plugins/kcfinder/upload/files/wetuzofetipozana.pdfIn PDF document text
    • http://atanasijornet.net/uploads/ckfinder/files/24907228366.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/4ce738260add3c93c54ec44bdb6abf34/bumodo.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/6939519934.pdfIn PDF document text
    • https://skykharchono.mn/editor/files/99661024848.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HKUGBsJGI0E/uplcv?utm_term=hangout+for+my+phonePDF link annotation
    • 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_off0003da2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DA2B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0003f0ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F0CA 18236 bytes
SHA-256: 36dadbfa01cf7b525c8d225b3e42cabb9f46f42a0d5e0a327e69f77682350b73
font_02_sfnt_off00041fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41FA7 10704 bytes
SHA-256: 74292c21ae6ae30125703766ba60aaa967138b590cc4a8a29e58745f934b1ad7