Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7a516321292c81…

MALICIOUS

PDF

138.4 KB Created: 2022-02-09 05:07:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 23cb5a80308a862404a1ba66852ceff3 SHA-1: e2ba64140d32b1c5dee1dfe7be1f1d61e69b2e78 SHA-256: cd7a516321292c812313c9b31e6dc87e91bab6289f489546ec089a8083ec1d3c
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8393

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
  • 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 https://tevav.co.za/XSRYdR1H?utm_term=demon+hunter+dps+guide+bfa PDF link annotation
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/2a3jho72ocvt7hrpor1l0h2vb6/32829908945.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/33901672172.pdfIn PDF document text
    • http://baracenter.be/userfiles/file/bugotatubafusaxeref.pdfIn PDF document text
    • http://hoachathoanggia.com/userfiles/file/lezopud.pdfIn PDF document text
    • http://askaudit.ru/price/92601085425.pdfIn PDF document text
    • https://interference.ajoda.eu/userfiles/files/jutafisupirajotan.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/do31qdai707g7quhd66bs1gds5/23038360085.pdfIn PDF document text
    • http://madiagranitosilano.it/userfiles/files/90298818784.pdfIn PDF document text
    • http://mopron.ru/upload/files/5728906669.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16128c964daa95---poruwo.pdfIn PDF document text
    • http://archiwum.wyryki.eu/admin/ckfinder/userfiles/files/goregisage.pdfIn PDF document text
    • https://cserepakciok.hu/xdata/file/nijujozikexokebal.pdfIn PDF document text
    • http://edanieltour.com/FileData/ckfinder/files/20210704_74E72599CB62FD81.pdfIn PDF document text
    • http://iwilldoit.ru/uploads/files/files/56911137021.pdfIn PDF document text
    • http://denis-lefebvre-services.com/fichiers/file/sizejozoboje.pdfIn PDF document text
    • http://veejaytechnologies.com/userfiles/file/xetowepopanuludamuku.pdfIn PDF document text
    • http://epoch-making.jp/js/upload/files/mosunogipekujuvipukuv.pdfIn PDF document text
    • http://insuralead.com/userfiles/file/lowinexonuvipefuxomakapar.pdfIn PDF document text
    • https://vendax.ro/files/file/fazitel.pdfIn PDF document text
    • https://heyratacademy.ir/file/dadexajifuwozig.pdfIn PDF document text
    • http://vet-spb.com/userfiles/file/nabune.pdfIn PDF document text
    • http://abwingscolley.com/uploads/files/43020264844.pdfIn PDF document text
    • http://kreativitaet-stadlhofer.at/global/images/userfiles/file/54108054473.pdfIn PDF document text
    • https://villanakarin.com/userfiles/files/96564907563.pdfIn PDF document text
    • http://yey.uw52.com/upload/files/jilisuguvekiruvoguza.pdfIn PDF document text
    • http://vertracapital.com/uploads/files/563757865.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/jasebozokevorafebolot.pdfIn PDF document text
    • http://gruppocinofilomarsalese.com/userfiles/files/xonixepo.pdfIn PDF document text
    • https://indoshaolinkungfusociety.com/ckfinder/userfiles/files/tafebojibo.pdfIn PDF document text
    • http://www.naturhalles.fr/fckeditor/userfiles/file/39501416541.pdfIn PDF document text
    • https://semot.com/Store/userfiles/file/zakonaputilufedefesos.pdfIn PDF document text
    • https://topclassgardening.nl/images/file/xoxuri.pdfIn PDF document text
    • http://fuerst-architects.com/uploads/file/kipek.pdfIn PDF document text
    • http://okvin.org/userfiles/file/lanamexono.pdfIn PDF document text
    • https://www.esicm-old.org/admin/lib/ckfinder/userfiles/files/xobofokematesugumuxemize.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_off0001b56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B56D 19204 bytes
SHA-256: 6e46333aa169d6d23ee6c3e4d97bb156cb971b337e0fc50a2bf9f2bf61953079
font_01_sfnt_off0001e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E7D4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0001fef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FEF4 11140 bytes
SHA-256: 1cb024320b5aeedd2de9081fb511d54bb1eb4a42388242ae84502b86d29f66d8