Malicious PDF — malware analysis report

Static analysis result for SHA-256 af26a39b36c14c3e…

MALICIOUS

PDF

88.8 KB Created: 2021-08-16 10:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: afafe09ea7c2a83d74e5ba9e44e33cc2 SHA-1: dc5f1e1a29603f95050d054f570f1ef805eff3e3 SHA-256: af26a39b36c14c3ef35c45f67a7034ca0a098a3ae983c4c68d025bf4ab2228a5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/8c8dcfd9b0a0540f9041372dae90545a/68953425280.pdf In PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815037e5324---tovobukaxijukifuzi.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/tujasodafulatago.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/28760426038.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b0940d98a42---xorukudaxepepalasunidi.pdfIn PDF document text
    • http://uniroll.pl/user_images/file/punubegaxofeposevelaxuta.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a30838ac8c0---3983478937.pdfIn PDF document text
    • http://trevorhannant.com/37091202465.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/46dbbd0d5f0cb8ac6e4079794ef171e4/fudukorinekuxupozomaz.pdfIn PDF document text
    • https://soudurelauziere.ca/upload/editor/file/sofaxubonegajut.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/59700013919.pdfIn PDF document text
    • http://susanjeske.com/clients/82887/File/83037201190.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16105b8cb9b0a6---40354432187.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f42422f6d---74188749027.pdfIn PDF document text
    • http://kanomax-nsk.ru/images/16191287085.pdfIn PDF document text
    • http://mobydick-band.de/fckdata/file/85899431936.pdfIn PDF document text
    • http://pitneyclan.com/clients/c/c7/c7afcfad87c307b096642b2e35f52d25/File/93616114260.pdfIn PDF document text
    • http://vividconcept.in/userfiles/file/73902182618.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/414ae1d5cd5391d852e39015122d71be/23202911193.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869d6ff0f85---lezudujosariwotobifuto.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/fatidixovepufuxujadujul.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16085a142de766---vaseguxuxugid.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/013b8748695e78b6b6e6ce8244a9e1ce/62154186552.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/71167055161.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-5-9/20210509145111442520.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=dunster+house+severn+log+cabin+instructionsPDF 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_off0000f53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53F 10816 bytes
SHA-256: e961666cfe5c56aca7d0294bae867239a7bf6ed6b85a0adbda79661400df96af
font_01_sfnt_off00010e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E36 17664 bytes
SHA-256: d84e97ae6fe839fdc737dc3984da54862b5f7380527d142a387541783c3b29e5
font_02_sfnt_off00013cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1