Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f5f987869ccd2d…

MALICIOUS

PDF

79.0 KB Created: 2021-08-24 20:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: b64ca4b79b13a9736c67c55756865175 SHA-1: fdb4f3f12c56e23c494d8a4bcff5029b8d8ee6c7 SHA-256: f2f5f987869ccd2dc9b975a7fb491dc3bf8987a704916d69d5cad1ec31026b92
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code or redirecting users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the large number of extracted URLs suggest a link farm designed to distribute malware or phish users. The ClamAV detection further confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://abwcrainhwy.com/uploads/files/nofabino.pdf In PDF document text
    • http://artetendasud.it/userfiles/files/95063391585.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/6qk5b2kv9cbb7aphr7pqj1troe/dadotuvoboxebekanozaf.pdfIn PDF document text
    • http://china-miyaco.com/img/file/20217620948.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/90dd923c9cdd2bc6e011aa21e9d62b72/joxuvogebugifuwifeke.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/nomisixogof.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/dolegirodurilosomiboturo.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608860d3f1233---tovomodarigawelep.pdfIn PDF document text
    • https://2acontractor.it/images/file/tixoxekifuruzoxef.pdfIn PDF document text
    • http://leoclubmarsala.it/userfiles/files/mozurapel.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160f6667fc5b4a---gaxutaxaseweninexapot.pdfIn PDF document text
    • https://vate-tire.ru/wp-content/plugins/super-forms/uploads/php/files/f12771694bb4a6f2c99559002b881b6a/95567188153.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/8995089857.pdfIn PDF document text
    • http://studioagronomoserragiotto.eu/userfiles/files/45468052524.pdfIn PDF document text
    • https://fundreamz.com/ckfinder/userfiles/files/bebumiroxupepiwafazad.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/5f26dddf6267dbbb5962d88da81c5577/6234529207.pdfIn PDF document text
    • https://anaksemut.com/contents//files/51775300275.pdfIn PDF document text
    • http://daisin1977.com/js/upload/files/xamokutoxakikamusexal.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/tekofosarifuzitabov.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9f0ca031c7---xofoletujipoxudaxezoro.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/e26b622e5831a88353d83d4eec742a54/sodabab.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/f7954897f154c268889b3431a1f7f736/44049512578.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=the+corner+carryoutPDF 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_off0000d129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD129 10196 bytes
SHA-256: f95bbc9aba915222eb8e6fc793db7bc47a2103d70edbe18dfee7c50e09e3b846
font_01_sfnt_off0000e802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE802 17188 bytes
SHA-256: bd73b9f5367e50d72ef7fe90a5a7a9f22c33a83ee330ccf1a7c05f9f1296aa28
font_02_sfnt_off00011422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11422 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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