Malicious PDF — malware analysis report

Static analysis result for SHA-256 7689808e84e77297…

MALICIOUS

PDF

86.1 KB Created: 2021-07-06 13:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: de998837e753098f96842e7c9e648d06 SHA-1: 03eb559cbe3a27cb1a22535e79871afe73a53000 SHA-256: 7689808e84e77297a83ff2ca52d924619ccc715be6e1c3ad93e6ca582f85979b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these link farms. The embedded JavaScript may be used to further obfuscate the malicious links or initiate a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/ddgdjcr78gfvht6c69cf2e2476/28930244369.pdf In PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/04f4c2aa9b0f68255d9ed367da898e3c/pesenerurifukorelopazuz.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762069d870f---27300170488.pdfIn PDF document text
    • https://oddluzanie.net/userfiles/file/79071556442.pdfIn PDF document text
    • http://coinmarketsuite.com/ckfinder/userfiles/files/tetotudovo.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/guvimisap.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160bfaa1f046b4---rarararaludo.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/rcr44rij6h3nobfqv94iprt94g/desomow.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607223cbe8adc---sosukuko.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/pipenotugujadelovunuve.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/rezafaze.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/48sk0k3rv1fuk14vlus6lvgt8i/pumitepofusuzu.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/48rava27cjom8uccfm60a1pmrk/18336313326.pdfIn PDF document text
    • http://pampa.be/uploads/userfiles/files/nevizorigotufuliniseten.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/8step7669oon46k3rstk5uaap1/jeselitel.pdfIn PDF document text
    • http://buergerforum-tirol.at/file/36426509361.pdfIn PDF document text
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210504193830083109wg36l9.pdfIn PDF document text
    • http://shukokai-voves.fr/userfiles/file/60925998118.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/66a39476adb10c9b49bd71e1796a4c82/4302719138.pdfIn PDF document text
    • http://voijin.com/userfiles/files/sujodanurigirezebibe.pdfIn PDF document text
    • http://goodslib.com/userfiles/files/jipefafavepidos.pdfIn PDF document text
    • https://promise-land.com/upload/file/waxoz.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b065bb8ead3---74373757178.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=funny+lines+from+christmas+vacationPDF 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_off0000e97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97C 10856 bytes
SHA-256: eca7f7cba124ad90f58e1e6998a1b1ec5cbb060a371d66e5f55eaf0caadb9a7f
font_01_sfnt_off0001026d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026D 17916 bytes
SHA-256: f044fa7de7779471bb894248543a13acf81a81f6ebddd04ea5a9c6ea5ebc6895
font_02_sfnt_off0001317b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1317B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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