Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87325eef5e0498e…

MALICIOUS

PDF

89.4 KB Created: 2021-09-20 14:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: d25ecf7b14c54b51416ddc97da2dc332 SHA-1: 1db5cc8f60bdcef5ed695dcdf2d9a3be8be2a4be SHA-256: f87325eef5e0498ebf6abdf7e073f17bae205bdd844f92ae07c522f80f70c8a6
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 7

  • 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.
  • 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://allytemp.ru/uplcv?utm_term=pakistan+chat+room PDF link annotation
    • http://simp-q.ru/userfiles/file/defotevolisubutuborewu.pdfIn PDF document text
    • https://medius.sk/userfiles/file/91231365361.pdfIn PDF document text
    • https://ceccarmehedinti.ro/userfiles/file/wipaxexipotunekobukuwabol.pdfIn PDF document text
    • https://rallstarawards.us/nbloom/fckuploads/file/85744380250.pdfIn PDF document text
    • http://mrspk.com/ckfinder/userfiles/files/doxafovubo.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/ecd6fe7d623ba6eccd9e5e3f48c118e7/25329700447.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/b48e022063ce1c3631a433f311c9d7bf/winafin.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/63150064450.pdfIn PDF document text
    • https://danielfelber.ch/userfiles/file/20636456419.pdfIn PDF document text
    • http://ucg-eg.com/userfiles/file/7530332798.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/82ddf184e20520a780dec67447bed502/vemibemide.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134c020ad2c3---pezijikonop.pdfIn PDF document text
    • https://bhiringisamsankalimandir.org/userfiles/file/niritinirujelali.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/10344962431.pdfIn PDF document text
    • http://knshzj.com/CKEdit/upload/files/52144717448.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/23981865010.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614122a6e8054---jebowa.pdfIn PDF document text
    • https://dreptultau.hotnews.md/upload/userfiles/files/zozif.pdfIn PDF document text
    • https://all-stage-meditation.tw/uploads/files/61312c251dd0c.pdfIn PDF document text
    • http://boras-sjuharad.boj.se/uploads/userfiles/files/zifap.pdfIn PDF document text
    • http://to-kajihan.net/js/upload/files/76156753438.pdfIn PDF document text
    • https://millvalley.com/wysiwygfiles/file/nutif.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/23531353902.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/pekagozadavonol.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/gupudufudinotirew.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/vukawalirapodakixe.pdfIn PDF document text
    • http://asupuro.com/user_data/image/file/99673537260.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_off0000f178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF178 10412 bytes
SHA-256: 1636b88dde361fa15c120f8a1b045a229e8cd034d2b4a7901d2518f810087f6b
font_01_sfnt_off000108df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DF 21156 bytes
SHA-256: 05647c2bb80a83a59e4a10904e5d979e1437fc408ff8c1967a68f76ceca16973
font_02_sfnt_off00013fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FC5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1