Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea65da45e5b498f…

MALICIOUS

PDF

307.9 KB Created: 2021-07-05 12:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9bd05425c6e8b90d086de70a388fe579 SHA-1: 8504064e0f70b34c4730ad614a57411eb03a768c SHA-256: dea65da45e5b498f4f2ff1b6daaacf263405d0041465130ca576826bdecf0fcd
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links pointing to compromised WordPress upload directories, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs are likely part of a lure to trick users into downloading a malicious payload disguised as a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608e872c5a288---ribodevulitamuxa.pdf In PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606d13e8ea172---jikixerepanejep.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba636cda01---kefiwavoweragivotavigu.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16082d13b1fd47---93860247665.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/905jrmfg4udq81ovbg7ub6ahj4/67731706566.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/5vsvvlkr5168ivihqcmklhl746/mipoxuduvaz.pdfIn PDF document text
    • https://groupunsur4.com/contents//files/9674727379.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/bkc2rs8om1s4l9hacahqus7cfd/8066002973.pdfIn PDF document text
    • http://advicetao.eu/pictures/file/48328136469.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/8e1d7d562c9e36ea1e668cc9c6cdbf18/13031307913.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/95176885823.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b2800da3d---sepapijamofunudedewi.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b653f04ca55---98859310578.pdfIn PDF document text
    • https://dm288.rs/slicice/file/jijap.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/81b1d642569e4f20ec531438c14c8a27/61052846117.pdfIn PDF document text
    • http://f-okinawa.com/img/tmp/files/61260209398.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/41363433655.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/60894222530.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/kenigidunakegadukatuxifu.pdfIn PDF document text
    • http://martonaroniskola.net/userfiles/file/nipatit.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/musemujilufebibaxep.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/73677d623748987775b312421ddeff40/tubaridosekumuxisevuso.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607faa07e806b---ralojelukutonekinez.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8814f29bb7---wuwegutebabinixoratolo.pdfIn PDF document text
    • https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862ab094463---9013981759.pdfIn PDF document text
    • https://folklorebridge.eu/uploads/pictures/files/53780818035.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=xylo+2+din+nippon+music+systemPDF 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_off00046005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46005 10752 bytes
SHA-256: 0bb0e84f32e59074dff7dce14a072e747715d2fb9673936eebf30a78f74932a1
font_01_sfnt_off000478cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x478CB 17576 bytes
SHA-256: cfba976adcd2d1abce18483eacb306b76a31123300f814862401a505a215a350
font_02_sfnt_off0004a67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A67E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1