Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfb895f6ab2ec5a…

MALICIOUS

PDF

92.7 KB Created: 2021-06-26 13:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 551daf51edc13a19beea8734a2003119 SHA-1: e22626ad46cda189f237b0c74ef3df4a3d9cffda SHA-256: 7dfb895f6ab2ec5af838b0f1ac3aa63886f8bec973ac01adacc8ef238404b9e2
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious. It functions as a link farm, containing numerous URLs pointing to PDF files hosted on compromised websites. The presence of these links suggests an attempt to lure users into downloading further malicious content or engaging in phishing activities. No scripts were extracted, but the overall structure indicates a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://xboxheerlen.nl/userfiles/file/moniteb.pdf In PDF document text
    • http://altaprecision.com/userfiles/file/6453087029.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160831976d4dff---takuropitemomobavovawenud.pdfIn PDF document text
    • https://lienlacanien.com/img_pages/file/40641265250.pdfIn PDF document text
    • http://jcbcharpentebois.com/ressource/site-image/files/tekokijujefujawe.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/ff857956dac89b86e88358870602b4f2/kajapekosokamedidi.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/rni40vtjv7naae66aljubin2g2/sisuwa.pdfIn PDF document text
    • http://www.toptehnik.si/images/67008058246.pdfIn PDF document text
    • http://grawerlik.pl/userfiles/file/7736139753.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b48cd5b1e07---jelinugovifekijug.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607b10a3d7365---26168277945.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/e37e37c331444b9b6cf31dbce053a148/govigusubawufi.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160824c651630a---dipidopivafujipidi.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16078bba83bcc7---berexovisedom.pdfIn PDF document text
    • http://changdahk.com/upload/88522372818.pdfIn PDF document text
    • https://kermoulin.com/userfiles/file/susurafefomurotugijumoz.pdfIn PDF document text
    • http://altinay-law.com/images/file/biragulefemaxuwumipuwo.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/43df3db0t8cqpcmnigme6a669q/52407253948.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/82275c20ebfa6c8386635395b3b9f9ae/12762811358.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c57555ad4fe---90563466020.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/slph1nc9ok0bhfc3vq27pfaaf0/sutowizifutamukekasamun.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/legama.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160c4453a50da8---dedoxoje.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/fowasuruxusowi.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d220ce0c08e---xoluzafosigutejakaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=bacon+toad+in+the+holePDF 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_off00010662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10662 10252 bytes
SHA-256: 3434a3ff849fc21a74a57ba14e97ce1ef6c6f690439a641c9f849a4ab983ccaf
font_01_sfnt_off00011d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001356d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1356D 17668 bytes
SHA-256: d44c79694cf1ceec63cfc33a7fd36908666d53595df8a49a913373c9da574718