Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf59f29ff8e97042…

MALICIOUS

PDF

102.2 KB Created: 2021-06-29 11:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c0c8e59bd504875dbb4ff2a780de69f0 SHA-1: c5353c8d8d59b8a94410888fd4cc5cc0aa3deab2 SHA-256: cf59f29ff8e97042e17fcb72622546dcbff7d0b1a2efe90a9a3539cb9df1d333
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the extensive use of external links and compromised hosting points to a tactic of leveraging third-party sites for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9358

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://pistant.ru/uplcv?utm_term=inexhaustible+meaning+in+english PDF link annotation
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/m6jbh6ur48uu2d341uqj8af5o6/97208810160.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa15aac041c---64252972820.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a25c15197f9---57168041216.pdfIn PDF document text
    • https://bibliotheque-des-arts.ch/ckfinder/userfiles/files/vewufoxetogunobovazemebot.pdfIn PDF document text
    • http://vhs1962.com/clients/b/b9/b967f936f519796c2a696a6ed1da67f9/File/fagoditot.pdfIn PDF document text
    • http://happypalettebnb.com/CKEdit/upload/files/kumifazitimupudesa.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a3607838723---21338520250.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b4fd9771a---71991357012.pdfIn PDF document text
    • http://panyuchen.com/ckfinder/userfiles/site_eachfun_com/files/91287333927.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160804aa522743---26988009529.pdfIn PDF document text
    • https://dodatnagarancija.com/userfiles/file/zolagiwanem.pdfIn PDF document text
    • https://almuhja.net/ckfinder/userfiles/files/19441028769.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/kefafifejegatuke.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/7312b0f66ad563536345990f488d2a25/78412287020.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098be2d65db2---tepededajuxipakowejifuxav.pdfIn PDF document text
    • http://cnmrobotics.com/files/files/pedeluzemumavopuvodufa.pdfIn PDF document text
    • https://hurtowniaroza.pl/upload/files/55001576535.pdfIn PDF document text
    • https://hoangnhataudio.vn/media/files/10003742168.pdfIn PDF document text
    • https://coffeetuanvang.com/Images_upload/files/94324848755.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/16058057524.pdfIn PDF document text
    • http://bagliodeimille.it/userfiles/files/kesupu.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aa78465c215---68715834989.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/12c7012663f3d0d27c9bf269557b2d01/28495686944.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/tudinivizavupibitetuzase.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/8c241c51095e849ba0d0b58d8657c88d/bizaxekomivukubuk.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077665cb050c---xoguguxawaposedate.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00016949.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16949 18916 bytes
SHA-256: b7dae7232751efc24dad1ec31599d22995edfc84be6f05f398f8a5441ebf3d92
font_00_sfnt_off0000e8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10110 10628 bytes
SHA-256: ca333367ad65624755b25c129bebef9450b285bf60c107e3d6b673eb5546acb1
font_02_sfnt_off00011924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11924 5428 bytes
SHA-256: d1712216ce946031112e75a1cfdcf9a3423f1be87bdd9e6c2b3e9fe3d2b88473
font_03_sfnt_off00012ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE8 25124 bytes
SHA-256: 208de4f47e7d5f46f1302b76d0d2f3437f437a0025dc833d1c33fcb43206c2bc

Open this report in the interactive analyzer, or submit your own file for analysis.