Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a408b5720598478…

MALICIOUS

PDF

87.8 KB Created: 2021-07-04 10:27:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e67737e5770f3eb67d9be7fd715ea058 SHA-1: 7400b387980ea939f4bde4929d0a9df9ccf8b4d5 SHA-256: 2a408b57205984783a901e3ea637818711076782e6ff19e486e45134d29a9710
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution campaign. The PDF structure and embedded links align with techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/f3417bae87f014cb173df4cef18605d7/solebid.pdf In PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/cvtics8vkkkf823ft3iquq14q5/veziz.pdfIn PDF document text
    • http://transcash.com/ci/userfiles/files/bebagetijubozuvenepeven.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/76e3174bd0e74cd82833e0794da1f94e/78048603557.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/i462pqhvckmfck34ri89rmh7v7/dulanilupafojid.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/pedonuta.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/32904147065.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/7e5411295f28267bb9cb2de2d0c7a054/sejemotomevuwikuka.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/rv1035ggena8t6ql1vpqpndqe0/vubotawamize.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/9inn4fuvevlok14t5oqsase2mq/suliregu.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210604_979CF028761CD7EE.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb6d6c5475---25915999337.pdfIn PDF document text
    • http://tsg-edinstvo.ru/userfiles/file/85393422469.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/bomovubeja.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/pmtr2rf8nc5scn65glkiq7d218/fabofuvovovuto.pdfIn PDF document text
    • http://novussiteyonetimi.com/uploads/file/65996443212.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16083b684e27d1---tuzinoladaxul.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/o14d7nosco67e5ntergk2vnld5/sevokajawivusaluziki.pdfIn PDF document text
    • http://chipublichouse.com/ckfinder/userfiles/files/zokuzuzosen.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69233cb958---punekeruza.pdfIn PDF document text
    • http://moriefrusca.com/userfiles/files/79696379010.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160b40e0ead62a---ragikijevunokoredemipix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=skipping+without+rope+exercisePDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0857bb1fb9---tudotaborafomezasulu.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_off0000f428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF428 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3A 17152 bytes
SHA-256: 840c7c6110d4fb811c77ac8af25cf74b45ef804ddeaae8c1acc3627ce8d1d64d
font_02_sfnt_off000138da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DA 10900 bytes
SHA-256: a3f9d3dcc76ba1e6c8e6640bbf12640c819d5953b46b980a5fc80c00ad78add8

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