Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d809f592f609d8b…

MALICIOUS

PDF

85.5 KB Created: 2021-06-25 22:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1958f142a183c2f03087293bfe9fbbbe SHA-1: 6e3367b77142cc55f7e606d0cb317f46f2088c91 SHA-256: 7d809f592f609d8bc252abebabdaefbb6c6ae96fb7384fd8f84f1d5e7b843e2b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this attack pattern. No scripts were extracted, but the overall structure points to a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://drafthe.ru/uplcv?utm_term=watch+alice+through+the+looking+glass+123movies PDF link annotation
    • http://ajivikafinance.com/userfiles/file/24930092192.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608a96d6e4000---givemaxikipu.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/tawexu.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/ebb3e4b207c449dba9dc362da2bc4589/ruzinezelunadojixosixudaw.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7470a80ebb---piwewij.pdfIn PDF document text
    • http://hnc2.com/userfiles/file/zoduluzebufeta.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983b882affd---44955724498.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/50201931250.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767eb862890---50004315680.pdfIn PDF document text
    • http://studioassociatoemc.com/userfiles/files/tixew.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/97beb5e876c05afe0b0272ae074b9e75/sobexibanetezenus.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/8ab44cd860fd3e282412eda3dd376749/2881984295.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/17676725007.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/dileforewewuw.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b4289447c55---90382971449.pdfIn PDF document text
    • http://spc1991.com/ckfinder/userfiles/files/55155035525.pdfIn PDF document text
    • http://mjsolankifoundation.com/fck/imagesfile/dakerajafamisufitilabo.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/72dbbcf42c663f5e20ef2ac7c82d5d7f/lelotugokijumut.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/414316a3d6d1705878cc392ed65c8ff8/6438378494.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/49gf02moqurajgadpnrj6bkt2k/lavofobavogunevumezepofew.pdfIn PDF document text
    • http://skupka23.ru/upload/m/vikasuxoxi.pdfIn PDF document text
    • http://szwygs.com/upload/totekapozaweb.pdfIn PDF document text
    • http://brenno-tojestto.pl/userfiles/file/61115698753.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210606065757.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_off0000e2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CB 19100 bytes
SHA-256: b86c857087eca0e8f8f5e92f17add1fac70ffc41587ec88dd86e9dd6cfd0b87d
font_01_sfnt_off000113c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C1 11272 bytes
SHA-256: 1f19ba1d8954075361128b2685809a8363d82e15eb170a02234d6a44fe6477d7
font_02_sfnt_off00012e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E3B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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