Malicious PDF — malware analysis report

Static analysis result for SHA-256 03fbfa987046e48d…

MALICIOUS

PDF

78.3 KB Created: 2021-07-09 02:36:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c352de5dbab33310587af4a8d212409b SHA-1: 9383ef65402abae2ad0e2e17bcc3a5780b128872 SHA-256: 03fbfa987046e48de8240c011c845e0b1498e3bba91fb71ffad4af279d211731
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, presenting numerous URLs that lead to various websites, including those hosted on compromised CMS platforms. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 http://firewheels.pe/userfiles/file/debeseditunudirami.pdf In PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/4e8884a304958ee33775b88f41886e2b/93009723862.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/2e8f7ce23755d378531f12ccf9604ff8/pobilovezobebivitobu.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/96lf7v2urud7t4u7lv5q7phgrs/nasubegejizenuraxetakig.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/5e6b2f0e595b3cc3cf4f83a10d4f12d8/90781434209.pdfIn PDF document text
    • http://haenuri.net/ckupload/files/wipifepax.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5f6ebc0b5---resazatimivegesenexi.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/68d3966d9349d8c8253124a5e749ff6e/dorijagoru.pdfIn PDF document text
    • http://incomsistema.ru/ckfinder/userfiles/files/78514198885.pdfIn PDF document text
    • https://wrd13.com/force/file/84919920880.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/2aa48d47a6d380f13679bbbe0f43cf55/nirefibusidegugawigu.pdfIn PDF document text
    • https://castel.ro/userfiles/file/69760209388.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/viwekavules.pdfIn PDF document text
    • http://tasarimak.com/ckfinder/userfiles/files/37978859439.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/rs13hvlf30guofd46ks4hpngf1/17378393573.pdfIn PDF document text
    • http://qa-whg.net/upload/files/tilogute.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/86808440483.pdfIn PDF document text
    • http://ud2-140.com/files/josevemosidewejutagi.pdfIn PDF document text
    • https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/194607d80e8d1255162ae0d5397588d9/nojevovunuliki.pdfIn PDF document text
    • https://travelsafeway.com/userfiles/file/20423236111.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/nilutorusalenunefo.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13876c4dfa---23316680463.pdfIn PDF document text
    • http://ukwoodrecycling.com/userfiles/files/zujaremosizanoxiwif.pdfIn PDF document text
    • http://xn--zb0bw3kv4s8mn.com/upload/fckeditor/file/36177193361.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b8a4a96ab---1050405193.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=3+letter+words+from+cottonPDF 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_off0000cd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7C 10544 bytes
SHA-256: 1285b4c136c25beb3f8b010a8b5246c4b7bae517888cd185cb3eca5e0272198a
font_01_sfnt_off0000e59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59E 18176 bytes
SHA-256: 484b1bbe2a7b957ed7f4424c401842d75cfaacda1c4dcc9ce64f12b1b8becb6e
font_02_sfnt_off00011429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11429 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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