Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1bbb15f1c0d39e…

MALICIOUS

PDF

89.4 KB Created: 2021-06-30 23:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 753eb47f984918724fd0f31b20e1fcd9 SHA-1: feb112a1ae6c91cccb108f1bfa780fc56f5ab766 SHA-256: 0f1bbb15f1c0d39e296f1269116aaadb0238701f2d2d20b4c9f17e01ccadb46f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The heuristics reveal it functions as a link farm, directing users to multiple external URLs, many of which are hosted on compromised WordPress sites or disposable domains. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/eju193jfiucrcib25ulkk2fvo4/91890039943.pdf In PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/xunekuradajo.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/kowebimanupuk.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/f634d24d051bdbd24b53921ae88f44fb/81763934695.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/limatozamabuguvetegu.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/20521763531.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/0ed983c19860e176f271835b1dbd0366/wewomeweg.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/ddb7e71a08619d90db2059c3082a791b/kosuripeditajuwalorerej.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/596c4ac5f27872cdd1c70d16d14f5a15/41622073703.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/bajiribobipulevesixekube.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16076a3da9a560---69031525153.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/0735347b8322e534e83fe8f3bb9f6932/texotulimokuguretutuvepiv.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/e83d3cf00877488fc4a00ddd221fa2f1/14328124852.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a1e688f2e3b---8975802446.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707bdff32c6---40984560975.pdfIn PDF document text
    • https://myupfield.link/wp-content/plugins/super-forms/uploads/php/files/68qj3onlcv4fp56883len7fek3/fugofebatatixotomi.pdfIn PDF document text
    • https://dienlanhhonganh.com/images/pic/file/81327042644.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608252b772cf6---37670807370.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/hbsbnh2v8ipg3kfb1pi940oj85/zajawopolorebetunejaloduf.pdfIn PDF document text
    • https://osikovo.eu/webroot/img/content/files/29678240724.pdfIn PDF document text
    • http://cn-daomeng.com/upload/userfiles/files/6c07764535ede30d4a0d52aec7dc73aa.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/kinetawizamufobule.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/pbc3i35mr2hodg36u3tg8eh845/binupalonujefikakup.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/labiwatuguxav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=composite+function+real+life+examplePDF 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_off0000fba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000113b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113B4 16616 bytes
SHA-256: 02a67f3ff48ae53fc0b88a9996376945828ee44fc0c8a801e9e88987e88fc3c8
font_02_sfnt_off00013ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF7 10876 bytes
SHA-256: 13c7a71e5ede05d80daf366ac353568e2cad4ecfd837ffefbb0dc364906249fa