Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa81d3206e4fd849…

MALICIOUS

PDF

218.9 KB Created: 2022-01-14 13:46:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 58f125b821b3f9c7aa36e9fb65bcaf6f SHA-1: 1e22bad03798603b9a836239434c5e7cd8778713 SHA-256: aa81d3206e4fd84931e2151f1fbb2841a7a08475812940efc5598eb4d43ef2d4
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7758

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://nomylo.ru/uplcv?utm_term=canon+pixma+ts3100+software PDF link annotation
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161608cbf227bc---18330228198.pdfIn PDF document text
    • http://fcvperu.org/data/fcvperu/userfiles/file/nuzumolenugexanovin.pdfIn PDF document text
    • http://mosjob.ru/images/file/dewewekure.pdfIn PDF document text
    • http://andi-nails.oldalunk.hu/userimages/files/21501064569.pdfIn PDF document text
    • http://neogmbh.de/www/sites/default/files/userfiles/file/jegojunijej.pdfIn PDF document text
    • http://amkchem.com/upload/files/wotepojifosaroresedel.pdfIn PDF document text
    • https://giyimkent.formenemlak.com/upload/ckfinder/files/67838061283.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a056fd7583---darose.pdfIn PDF document text
    • https://www.colfacor.org.ar/administrador_web/kcfinder/upload/files/55898348705.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///64111065680.pdfIn PDF document text
    • http://distant-property.ru/fck_editor_files/files/63061661841.pdfIn PDF document text
    • https://panasonicenergy.sk/editors/ckeditor/plugins/kcfinder/upload/files/83330869882.pdfIn PDF document text
    • https://kmkmekanik.com/upload/ckfinder/files/sujegalanisuritolix.pdfIn PDF document text
    • https://giritrademark.com/content_files/files/96649167288.pdfIn PDF document text
    • http://be-now.pl/userfiles/file/vejorugagumamotijulexu.pdfIn PDF document text
    • http://df-2.de/images/daten/file/merurafejejakum.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/161661c0d3a9b7---nagufimopaxipebebeto.pdfIn PDF document text
    • https://zdravka.hlpr.hr/userfiles/file/pisowal.pdfIn PDF document text
    • http://coinproject.com/userfiles/image/file/kuvewaze.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/bodevipinudopi.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/9295f1eb78ed280fc22f2d3b5cfa1ec9/donalilusadosibizewiwozod.pdfIn PDF document text
    • http://m-camper.ru/ckfinder/userfiles/files/xenegole.pdfIn PDF document text
    • https://1000fdep.talenzsoftware.fr/upload/files/41859840011.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c387c612227---gevutakolip.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_off0002fb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB63 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00031202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31202 18628 bytes
SHA-256: 55670296cba78fc53d4a5e113e55c21e1e7b2f7908175d700942d2b461dcb98a
font_02_sfnt_off0003428c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3428C 11036 bytes
SHA-256: e4a42ed23b8d441714a0547be515182ff57a4126b3f7ae56ea249bffd4d2c0a2