Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fec7279a36afc47…

MALICIOUS

PDF

93.4 KB Created: 2021-07-04 22:53:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b7b768d3226d2dd8166e8021c96ae94a SHA-1: be75c6ed193c600c0dcfe20423fd69c1b309e6de SHA-256: 0fec7279a36afc473b20ad3a1c9f968c46905c145da2883abd69be65a7bc37ba
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that exhibits characteristics of a link farm, with numerous URLs pointing to compromised WordPress sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to external malicious resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

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://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/05493eddaed5617054657e9b57393f32/fuzodoxelozibozipifo.pdf In PDF document text
    • http://dinskayarealty.ru/media/file/15462277863.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/cf76546a261ff4dfd656a0fe92b0dd08/18456483775.pdfIn PDF document text
    • http://eaeocs.com/clients/c/c7/c75ed17bfa54634cfc1039f1b599a7e7/File/42005630226.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8f4470292---35266834281.pdfIn PDF document text
    • http://santamariamikado.com/uploads/files/fovibeg.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160778418443e3---33780958387.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fb20b8951---24521211033.pdfIn PDF document text
    • https://vieclamlaocai.vn/webroot/img/files/24864543993.pdfIn PDF document text
    • http://ngocvietbungalow.com/upload/files/77240933317.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/21ce532ba327e4536e4a4415e991d0b5/57524328590.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/fdtkubrsnc61b132blvsqm163n/7498554870.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160abb63424a99---65171575244.pdfIn PDF document text
    • https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/4f7455523d3e24c6fd6027c8b0305bee/45774298881.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/67c32720ae33dbdcef3faaf8d9c5bbc3/wukomog.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/kovetegirabimurazebetepav.pdfIn PDF document text
    • http://caratow.eu/userfiles/file/38472731710.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e67214bfe---lavituxig.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4f15a2345---nejomil.pdfIn PDF document text
    • http://csc0731.com/userfiles/file/20210630170325_z0hxch.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c16eb3793ae---gipugoluxogaro.pdfIn PDF document text
    • http://gdlianyu.com/uploadfiles/file/28389032137.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/39de81bd6351e54edb08f209cdd9d122/tipawokitiroreru.pdfIn PDF document text
    • https://aspirans.com/files/file/46220311918.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/a2d4b647097c51549d71275c0c1c74bb/ruzixapunibimawap.pdfIn PDF document text
    • https://ctapigroup3.com/contents//files/tufivutegotuwowusefadug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=tower+of+god+257PDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC93 17084 bytes
SHA-256: d57410e9f50c9de3a3ef3c9295edded953ba3eac34c30a3c5c423d8f5ddc7568
font_01_sfnt_off00012904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12904 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001411b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1411B 10212 bytes
SHA-256: c660b3e39b13352a1f9e7788480fd341bcc3b36581b3304abbfddf4ad0ef7868
font_03_sfnt_off00015810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15810 3652 bytes
SHA-256: e49cc114bb9d47650a364e45e244f25fc5e422cc12b301cdef3a312653df73ea

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