Malicious PDF — malware analysis report

Static analysis result for SHA-256 05b1a0e72e5698cc…

MALICIOUS

PDF

74.5 KB Created: 2021-08-01 12:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 377ed0663af4a6e0dc9655d421dac983 SHA-1: bbafa27634523e6f3dc432e75a1e83d70f1c9671 SHA-256: 05b1a0e72e5698cc8b4e5ae980e26e997976ad2a6af259c127d17deae3df1736
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised or disposable domains, indicating a link farm designed to lure users to potentially malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of techniques used to deliver secondary payloads or redirect users to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=love+island+game+season+2+two+truths+one+lie+answers PDF link annotation
    • https://livresdarts.com/ckfinder/userfiles/files/juwerowul.pdfIn PDF document text
    • http://sgrappresentanze.eu/userfiles/files/xefulebilojufun.pdfIn PDF document text
    • https://clove7.com/userfiles/file/rekesisemozi.pdfIn PDF document text
    • http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/71858231987.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/6r0ckptu8kj2dj0bhs1al15eh3/vukisiwemu.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/ganosuwifena.pdfIn PDF document text
    • http://zgic.ru/!upload/files/safabalofozosi.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/lezovakuwowe.pdfIn PDF document text
    • http://graham1978.com/clients/79565/File/42218445435.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c06385509---3699924367.pdfIn PDF document text
    • http://ohappy.org/userData/board/file/zukazatubepisupiwogaf.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081e0e88912f---90966178615.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d846a60836bb50d81f698484783dabfd/zemedesinelizipat.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/58316076536.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bc73090438d---godopubijezedefoxukufudom.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160dc0a9685b93---wapejixad.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/3a0eb765cdafb75552dbeaee43b093a3/kafotubogipone.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47a1a3e890---54244870943.pdfIn PDF document text
    • http://kleiberit.ru/files/file/riseri.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/e92f9b07a8d11df1d8b7ae8d0bfb3f4d/jijadadokexodiw.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/f69312c4c8babdd0db05ee6295ade321/zasatalijotuxul.pdfIn PDF document text
    • http://prochem.vn/images/uploads/files/kumufexa.pdfIn PDF document text
    • http://fszhenjia.com/upfolder/e/files/20210730010015.pdfIn PDF document text
    • http://aahsclassof1978.com/clients/b/b6/b6117739535924054831d33ecd54b00a/File/wevuxufejuxigatal.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_off0000c0aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0AA 11024 bytes
SHA-256: 44e8dd17729e72a538146d84232e9c2ba5fe9ee5a8eefdc12a05a26e888b0c7c
font_01_sfnt_off0000da03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA03 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF215 16612 bytes
SHA-256: 324116b6a3e127485864dcd92181bb3749b62b5c22ed3766ceb045380e5ab7ee