Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2513ade0f1e621…

MALICIOUS

PDF

84.8 KB Created: 2021-08-23 13:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 619d68c4b598e8863e67e4ec52b91990 SHA-1: 48a4b1f0d5d32c50c10b5c51d16ec246c876b8bc SHA-256: af2513ade0f1e6215c9b5f7e078b21b69da56bff9321ae04333feb6243a8fdf6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=how+to+find+the+roots+of+a+complex+polynomial PDF link annotation
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607111adb570a---60990591598.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/97529324393.pdfIn PDF document text
    • http://pandoreunion.com/clients/81456/File/26586652171.pdfIn PDF document text
    • https://markiza-trade.ru/admin/ckfinder/userfiles/files/42851465442.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/kitixopawufal.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f07ec3b61---45266621972.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/semefibodonen.pdfIn PDF document text
    • http://chiaranannini.com/userfiles/files/posesinoru.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1610a28f327faf---jijifexat.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/f53f3cf4e21cb2c476ba72775b896827/pojewe.pdfIn PDF document text
    • https://cepatdaftargroup2.com/contents//files/gugibutedalapemobijepo.pdfIn PDF document text
    • http://rheumatology.institute/upload/content/file/46779712041.pdfIn PDF document text
    • https://kasihpaham.com/contents//files/vemavuroxe.pdfIn PDF document text
    • https://espiber.cl/images/uploadedimages/file/gagev.pdfIn PDF document text
    • http://yuanyoujie.vip/userfiles/file/68917837427.pdfIn PDF document text
    • http://dzbnf.com/upload/file///rarotavibogatokumefesajiw.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079c1df47028---7941852798.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/kf1iqcb9lbb6b9oqt04gsj23q5/63363007055.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/18fef9fb344fe07592e2d2fe1caa5565/27024108648.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-4/20210504045346390720.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091f16bb8ef3---dasuzubirokakoris.pdfIn PDF document text
    • http://odontoflash.eu/userfiles/files/gakamiletuxam.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c162d0710---3945144533.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/sixokuvevebasigedipunuw.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_off0000e1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F9 18492 bytes
SHA-256: cacc4d2dee11db6555798d33274181d0a41684f644055d531ebf946cd67c92f5
font_01_sfnt_off000112fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FE 11176 bytes
SHA-256: ce3792f79bf2c1a53dbe939e021dd49f6c9d8dc87db7724d186d650be99df587
font_02_sfnt_off00012cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1