Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fa27268b79e088…

MALICIOUS

PDF

78.9 KB Created: 2022-04-07 23:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 6ba2acb9f47da237c93a98232c5ac1d2 SHA-1: fa6e8e83cb8f810b46ae550a6f7bae08f3e1be47 SHA-256: a4fa27268b79e088e07d6e5f0810236465871ec8938820a3d8c17108562c7aed
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://loheb.co.za/YmrXLWy8?keyword=how%20to%20report%20a%20chick%20fil%20a%20employee PDF link annotation
    • http://arsvet.ru/img/upload/xijutogoregumefoduf.pdfIn PDF document text
    • https://gizibufunete.weebly.com/uploads/1/3/4/4/134492386/mazifozopexaf.pdfIn PDF document text
    • http://yer-krasnodar.ru/ckfinder/userfiles/files/37048207095.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1623dac005b849---60827081173.pdfIn PDF document text
    • https://zovewobaj.weebly.com/uploads/1/3/4/7/134719332/towupujekafototeka.pdfIn PDF document text
    • http://eurogalvano.com/admin/kcfinder/upload/files/mowuzisedixiviwiguzofe.pdfIn PDF document text
    • https://dawopurasujup.weebly.com/uploads/1/3/0/7/130775219/1d5fe.pdfIn PDF document text
    • http://orem.mn/uploads/files/74797395714.pdfIn PDF document text
    • https://wilumixomili.weebly.com/uploads/1/3/1/4/131483065/6570260.pdfIn PDF document text
    • https://xovokemuzulu.weebly.com/uploads/1/3/4/7/134703915/e5a0428349.pdfIn PDF document text
    • http://grupophi.es/uploads/files/57060308784.pdfIn PDF document text
    • http://arc-exir.ir/cache/fck_files/file/9321837919.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16248c4791387e---6815832815.pdfIn PDF document text
    • https://modibidusez.weebly.com/uploads/1/3/4/0/134096811/4014788.pdfIn PDF document text
    • https://tuxibefogeja.weebly.com/uploads/1/3/4/3/134359070/3262568.pdfIn PDF document text
    • https://savitravel.ro/ckfinder/userfiles/files/gamiralituledibis.pdfIn PDF document text
    • https://handmade.sdelaemlegko.ru/files/userfiles/files/ginuxobo.pdfIn PDF document text
    • https://zitudoxe.weebly.com/uploads/1/3/1/4/131437236/moxogob-butegi-mawobutu.pdfIn PDF document text
    • https://ponukikoruxa.weebly.com/uploads/1/3/4/3/134343798/1823286.pdfIn PDF document text
    • https://kepevexin.weebly.com/uploads/1/3/4/2/134234606/kupomolariminitinif.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16239fdf923f93---muzowatagiludupegugamon.pdfIn PDF document text
    • http://waxiangyuan.com/upload_fck/file/2022-3-2/20220302041258614142.pdfIn PDF document text
    • http://www.hzkontejnery.cz/ckfinder/userfiles/files/80086107726.pdfIn PDF document text
    • https://urologasdainys.lt/userfiles/file/72377029863.pdfIn PDF document text
    • https://www.tahi.hu/ckfinder/userfiles/files/kenibesiz.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/879af4a88a7113c3a0240de65e22be69/99352371871.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 extracted file (font_00_sfnt_off0000cda2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cda2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA2 17664 bytes
SHA-256: e0e428bae8e2e845e730427a79e601fa7cc3a1c3b8b7c0171e40ab01b9536dfd
font_01_sfnt_off0000fbb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB6 10756 bytes
SHA-256: 067b613e668118a90d57dffcfd9a11291b0e4889ff1866a467828f816b00034d
font_02_sfnt_off00011480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11480 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1