Malicious PDF — malware analysis report

Static analysis result for SHA-256 570079fa78c2ec17…

MALICIOUS

PDF

85.8 KB Created: 2021-07-03 13:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 69b61dd65e5bac4f79b4856bbe70375d SHA-1: cbead7a5b3ba068f0923a47511a9f125376fb8ed SHA-256: 570079fa78c2ec170f07f6682137d3064427696055bc52a115504713bb1eea2f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised WordPress sites. The presence of these links suggests an attempt to lure users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.alexgis.com/siteuploads/editorimg/file/petifejira.pdf In PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/6d4194e971ac886fd8b1d4601d13eea3/98105108485.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609065e4a77c1---94020460553.pdfIn PDF document text
    • http://arch-teh.com/pic/userfile/62462339152.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/ed6ec54452d86988db84292c1daf3d7e/86090101967.pdfIn PDF document text
    • https://wfca-czech.cz/temp/userfiles/files/77513285753.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/vifejoxeriroguvomovegaruv.pdfIn PDF document text
    • https://myupfield.link/wp-content/plugins/super-forms/uploads/php/files/m0f12ptcsps628i0te7h78arn7/memigatakabixidato.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///99795982732.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cdb8c3c9f5---jakasukewo.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/705125f721a47596c05ee5ea29feff0d/50357731125.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/df8ff0d82a3f95ef359064444c9f913e/92643424942.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/717235a22f13ddc434efb850fee3c5f6/lisarezabukomixodatanuto.pdfIn PDF document text
    • http://rothemtour.com/FileData/ckfinder/files/20210701_8C534B8C8DF63EDA.pdfIn PDF document text
    • https://jotekonybakterium.hu/userfiles/files/17145824414.pdfIn PDF document text
    • http://kardelendalgicpompa.com/uploadfiles/file/63745104732.pdfIn PDF document text
    • http://fanti-fitness.pl/uploads/assets/file/50003214768.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///59887523707.pdfIn PDF document text
    • http://fotossc.pl/_files/file/13774257991.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607097e413db7---xijupawamepeforatusel.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c740c0810---56102398713.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=sunday+oldies+songsPDF 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_off0000ec60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC60 10516 bytes
SHA-256: 421484b98df8bbbdd5e18b7a15b02ae7ea8e738bb490841caa42801caa3acbc7
font_01_sfnt_off0001042c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042C 17480 bytes
SHA-256: ff17e1198e64cc904c533d12e098eba1cb6a94e90eb133d5b1e2949244ac4aaa
font_02_sfnt_off0001322e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1322E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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