Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08e0e58c38fd294…

MALICIOUS

PDF

88.5 KB Created: 2021-06-26 14:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7d0a2386de88894100df3ea3ae84922b SHA-1: 9d952a4d493a012aecfe183da994c3f4d5a4de69 SHA-256: a08e0e58c38fd294fc86368814f0cd98c41862203bd7da1370ccd73c8dd442a1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised websites, many of which host other PDF files. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, and the presence of embedded URLs supports the link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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 http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16073b5cc46161---lapome.pdf In PDF document text
    • https://publicbridge.pl/userfiles/file/94080610276.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/krkai5v01005vulf0gbvan9nva/72902350540.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/a1b99900390796f3d9c9b419349f5b14/61936170648.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/8580978468.pdfIn PDF document text
    • https://lecapsuledigian.it/file/17308199204.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/bivuvojowavesirosule.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/pigupulugijuzotewonuju.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160ceab69b981c---tijamaxujinanove.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160acd71349d1a---pizipoxaroxizidujo.pdfIn PDF document text
    • https://phuquiland.com/upload/files/ziwevuvabujurozuvelome.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/f3esj4fu14m946dr5lgrd7r2sb/jisugarilizom.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a83f24c1357---baxakixamonafova.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16093445d3b4d5---gizozobokene.pdfIn PDF document text
    • http://obasekiestates.com/UserFiles/file/jasevupagoxonulatogakik.pdfIn PDF document text
    • https://hrmconsulting.biz/upload/files/81177728506.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160aca6400d697---48015956165.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/deporamivelar.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/87588647615.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/96049028567.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/47e5e1599e800905cdce08d509e743d3/tipamagodupile.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/676fe1d64474c6df031c7371717d2b3f/40324024475.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c8bde3f95---budumidirawuz.pdfIn PDF document text
    • http://n-production.com/upload/fckeditor/file/80334626707.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/37902819175.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/68e33de63a8f92ca32c02f41cbcea73c/gakis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=judicial+branch+crossword+puzzle+answersPDF 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_off0000f552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF552 10888 bytes
SHA-256: eff9d909bed439e2323bfb61706c2e24ff654303ad6e826d6c331f2a1d85e5b8
font_01_sfnt_off00010e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3B 17880 bytes
SHA-256: b357c35622dcee33ab0ba37db3ec80e7c00e8dbbb084923c3e18c34cd60a907d
font_02_sfnt_off00013c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C23 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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