Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dafc0068279a2f5…

MALICIOUS

PDF

94.5 KB Created: 2021-06-26 01:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b770488c05372ebd6feaebe658c40ffd SHA-1: b0fb8e0460a6670ad5c1adff7d5f1d63e3384fc3 SHA-256: 6dafc0068279a2f5bfcd63cfbcd2bf658d9084b839107f50107f107f66159c2d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to various websites, some of which are hosted on compromised WordPress installations. The presence of embedded URLs and the nature of the heuristics suggest an attempt to lure users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://pistant.ru/uplcv?utm_term=apple+interview+questions+with+answers PDF link annotation
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c79ef361a5---61409220617.pdfIn PDF document text
    • https://advance-pack.com/editor_upload/file/37205325843.pdfIn PDF document text
    • https://teenvolunteerhouston.com/wp-content/plugins/super-forms/uploads/php/files/6047c459a32f10c10ffccb34b0b7ce61/tibewunilokexegelufepe.pdfIn PDF document text
    • https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/2318e0835711ff4bdbc3fcb4b12ed4b6/41189712164.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5ce8954c3---6281696666.pdfIn PDF document text
    • http://emons-verlag.net/testarea/cwsCMSlight/media/files/48786063423.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/kt1h4mq64n01mc4jsnk4ndhtiv/zafitafob.pdfIn PDF document text
    • http://emmanuelmissionarybaptist.com/clients/74938/File/bunovobajexop.pdfIn PDF document text
    • https://obermeyer-modemarkt.de/upload/file/ravebofib.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160792a3ee641a---43520269824.pdfIn PDF document text
    • https://www.treehousecare.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608052529f12c---polidiporukugifo.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/51423c69cd46de3b4a140b274c845608/38929376588.pdfIn PDF document text
    • http://tnslib.net/userfiles/files/5059406057.pdfIn PDF document text
    • http://pwr-tech.ru/userfiles/file/gedotitomudebatelegono.pdfIn PDF document text
    • https://iqmuseum.mn/uploads/files/vowagewita.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/vegudur.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b9fde28ce13---34566197141.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/nivuwuzazalufufevizafemiz.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/c62784ea2cbd85f8aa326f446dc571ba/62265776130.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/a640abe108d57b537b0247378cbee0c4/xovufarivupiwa.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/329f9fec59f929589e6c8c07cac7f51f/lonugevazewazenivuzezozig.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/9uu00jjoj61kkc138rv0r68e1p/18790989852.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_off00010cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12509 17792 bytes
SHA-256: 1a468ba3d8f029da778e3782aea646c5e333c4ff24f4e66d6d3cb11047bffbad
font_02_sfnt_off000153b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153B7 10728 bytes
SHA-256: ff8e8e60d0af394795cb423b54b1191522c58cb3112d4c9fbaf9c75a951f556f

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