Malicious PDF — malware analysis report

Static analysis result for SHA-256 20d9d581432e3076…

MALICIOUS

PDF

95.4 KB Created: 2021-07-01 21:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 804148ac053214847824faea1a67c388 SHA-1: 8ec202891d37d52fc1898be4ddcbb30b688aab65 SHA-256: 20d9d581432e30765da9fecc95e59ca3cb206060a9788cedf3f8a33f12a1a5f8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution intent. It functions as a link farm, hosting numerous PDFs on compromised WordPress sites, likely to obscure the ultimate malicious destination. The presence of external URIs and link farm heuristics strongly suggests this document is part of a larger phishing or malware delivery infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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 http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160843150e0034---11484278340.pdf In PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082266675573---28793450915.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/sogokasubokodagejobum.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/16385534830.pdfIn PDF document text
    • http://bronia.org/userfiles/file/17746352943.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/08sinbviioq85cmuesfgrcblqp/32474632029.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/19198456181.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e03e8a90bc---79823659800.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a618a8b19b---316996835.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/590993db1bc62a7e8d47ed9c3a247ba7/tadutafodanaf.pdfIn PDF document text
    • http://airsoft1.ro/files/file/91311587261.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/6l7qk069v668je9jl9lk18v3r6/saxodupetezagalejixa.pdfIn PDF document text
    • http://atreve.eu/ubezpiecz/obrazy/file/rewuduruzofepobup.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/711ecf4c71da3f2746f68eef9f1bd7ae/xumutopiwe.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/pveo9c4roopo379r2mr1e3vnk5/didejabafuvixiwurironinum.pdfIn PDF document text
    • https://e-uchebnici.com/img/file/87495703367.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf3996ba61---xuvujonuzu.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/zozugeluxoxuramu.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210518005252.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070dd3c2f75d---80391423629.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/21122673825.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/279569189.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857cd126aa9---59819009198.pdfIn PDF document text
    • http://omegapizza.net/uploads/files/vekukegasifawekifawivat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=need+for+speed+most+wanted+2005+cheats+pcPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2F 11188 bytes
SHA-256: 56cd46e3f51e80fd82b47bed073125206d0d5c07e931d5a96f2ab368a726b794
font_01_sfnt_off0001095d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1095D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001216f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1216F 23116 bytes
SHA-256: a2d49be9fc772a4b2f11db18e09e9925c3d9785674c991c9ae38441d6879b665
font_03_sfnt_off000157d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157D3 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa

Open this report in the interactive analyzer, or submit your own file for analysis.