Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c8d9c3c01bf6279…

MALICIOUS

PDF

83.9 KB Created: 2021-06-26 06:11:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 87dcd6d83e499e53dcbb7d970dd84add SHA-1: 9ed8a2aff99511d2c9fc0a19fdb444ead15736ef SHA-256: 1c8d9c3c01bf62790e6869802ebea14510c1519cb66d6996534d1e2c15d4e6bb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating it likely exploits a vulnerability or contains malicious content. The numerous embedded URLs point to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The file's structure and URL patterns are consistent with a malicious PDF designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crewmak.ru/uplcv?utm_term=full+numerology+report PDF link annotation
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6343374b97---somewo.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/jiwarimarewabanipabux.pdfIn PDF document text
    • https://wfca-czech.cz/temp/userfiles/files/81733447690.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/63607839744.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/3i7vbkn00v0q1k4jpcm9gjvhi7/midavuwa.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/lajoresiwusog.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7882e39cc---46951998729.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607166644d958---26893318340.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/r8sctvuah4u8rc2c3ch0f5eqhu/vuwipalalusuzuvanogetew.pdfIn PDF document text
    • http://4grd.com/cmsimages/file/daxezeraduj.pdfIn PDF document text
    • http://asijskepotraviny.cz/files/file/39982941028.pdfIn PDF document text
    • http://poorclarescork.ie/images/6171246602.pdfIn PDF document text
    • https://onhimalayas.com/ckfinder/userfiles/files/83695556413.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/081319e3f627c915442fd1dad44e9151/gaziwu.pdfIn PDF document text
    • https://xn--80aaijzh9b.xn--90ae/documents/file/naveramajonawabemurivamu.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/47bmej9c9929mod2fagseu9los/95001797467.pdfIn PDF document text
    • https://partnyor.az/userfiles/file/vifarapejebunijegafuxi.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/5g2c0dajl81m098ie7j6ha0n7b/81676323644.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/61924558827.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/c5a3c824f23bf99295a9e5fe282cade7/zedovuxaxagizawa.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/93c348e675a6158fa57dbbaf83bddd0c/48414452405.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097cf8c70ef6---83588641361.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/6flkprvfec8e3queh90ge4eamf/talij.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_off0000e54b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54B 17476 bytes
SHA-256: 497ec6eb2e56427c8ee841dfd5de31eac3be6f59aef6e517ff379f384cb02686
font_01_sfnt_off00011329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11329 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B40 10364 bytes
SHA-256: 7a27dee99f765325b2413b44665cf2554cae514f2e31ec5de2155dd254858fe5

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