Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99f0348df227b38…

MALICIOUS

PDF

70.1 KB Created: 2021-10-01 01:57:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 6127b716c84ca62aae1a0200f349172d SHA-1: 1c144998098b65b11bbdb316d7d0e2cd7c932443 SHA-256: f99f0348df227b38f379100f92df01f7ccfda5d3702cabd211fb9f465c62dd33
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://chcial.ru/uplcv?utm_term=brooklyn+nine+nine+streaming+service PDF link annotation
    • http://nhanvietgroup.com/demo/xay-dung-tnx/upload/files/48185438680.pdfIn PDF document text
    • http://denda.co.kr/ckfinder/userfiles/files/56724300276.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615127b5cdf69---81143088420.pdfIn PDF document text
    • http://technology-mp.it/userfiles/files/fozadanuzafubojorozafu.pdfIn PDF document text
    • http://www.malagatour.es/ckfinder/userfiles/files/pasinutalurarefegode.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/78442483683.pdfIn PDF document text
    • http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/vuginov.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/50614136966.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613caad50bb76---daranonuwavozajodij.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1614e0b93b1e9b---8357875483.pdfIn PDF document text
    • http://arc-en-cielproduce.com/ckfinder/userfiles/files/51338398074.pdfIn PDF document text
    • http://jinyudachem.com/upload/files/jizanejazutid.pdfIn PDF document text
    • http://viermaalh.nl/Bottesteyn/Site/afbeeldingen/file/wumesiwamupopepo.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161509c3928467---xasetane.pdfIn PDF document text
    • http://tianlanlawyer.com/filespath/files/20210908140028.pdfIn PDF document text
    • http://tivatijapan.com/uploads/userfiles/file/temabotulegumadamajosuba.pdfIn PDF document text
    • http://dighakanchaninternational.com/FCKeditor/file/26082954548.pdfIn PDF document text
    • http://nwatchonline.org/userfiles/file/42097988461.pdfIn PDF document text
    • https://ariaparvaz.com/basefile/ariaparvazcom/files/wexiwom.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/sejigirejokezelibuwunori.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/tofef.pdfIn PDF document text
    • https://tranhtreo.com/images/ckeditor/files/73515069168.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/gakon.pdfIn PDF document text
    • https://holcom-wd.holcom.vn/webroot/img/files/mepenogisipejobimoj.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_off0000b310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB310 14928 bytes
SHA-256: 727608277a5c44303b68df1ba7e3db5c89db7101561b6ab72a98f4bdf1052ef9
font_01_sfnt_off0000d8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CF 10900 bytes
SHA-256: 1249329164b41ae09b4397136b01fae5fa81fc87c7b6da97eae99c762c807c98
font_02_sfnt_off0000f221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF221 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1