Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db8a135d8783059…

MALICIOUS

PDF

92.7 KB Created: 2021-07-01 18:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 06ff19841d5ce0001d0f44fa38854ae9 SHA-1: 332829220370617629eaca5ff62f847b5b000723 SHA-256: 1db8a135d8783059dd140507875eb288487c9fddbf3f74d58d027c64d530a500
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including a ML classifier and ClamAV, as malicious. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content is designed to trick users into changing payment details. The numerous external URLs, many hosted on compromised CMS uploads, suggest a link farm intended to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/2b015fd812d9872f78ed90fe0ef53f48/sazonibipubulogibe.pdf In PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3cfa9b999---57860746438.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078c06d0e638---domarijapegepabiwu.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/womigarikabaluvisekebupe.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/98ba20d6268863511e2d7f57d499536e/gimuluwege.pdfIn PDF document text
    • http://khyljg.com/uploadfiles/files/92866821312.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086af81afc29---45750706728.pdfIn PDF document text
    • http://pechati-piter.ru/userfiles/file/lulapodigopobireturagime.pdfIn PDF document text
    • http://artkulinaria.pl/sites/default/files/file/68942759754.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/c6a7ed7184a967f5250c6ee1700a6c53/24398495359.pdfIn PDF document text
    • https://altonika.pro/files/fck/file/tiniwitolidodogevivut.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160753aaa5428f---gemomoxusegap.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be1373525f---71800162430.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607afc1b3cefd---6125112265.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae669ad89b---redogesiruk.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/47434807184.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/56036594855.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16080a3b350a5e---75014022564.pdfIn PDF document text
    • http://hosungtour.net/FileData/ckfinder/files/20210701_205DE823B7118D4C.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160799f53deb79---bopujovovuxob.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/222e3f43c78689cdc99b992fff8970e0/nugumikozadazo.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/50421285701.pdfIn PDF document text
    • https://dienlanhhonganh.com/images/pic/file/72504256350.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=enjoyable+careers+that+pay+wellPDF 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_off000106b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B0 17932 bytes
SHA-256: 40e17a2747ab5165b3d0d5a0301724949f5cac2522123334f57816d30a12c83c
font_01_sfnt_off000134a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134A5 10832 bytes
SHA-256: 0424dfc82bf7ff301357cc0d8b7b67cbeca45867756508fc229afe94ecf5cd92
font_02_sfnt_off00014d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D81 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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