Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a462f420aaab266…

MALICIOUS

PDF

82.9 KB Created: 2021-08-10 07:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1bd7c62f1ce565cb272e7dfc3b8e2d8d SHA-1: d4db5d2f66f44b182f788ce2a8ba5f6cb94fc3c3 SHA-256: 6a462f420aaab266fe9e0aa304c9a7268df1f13781f03f26642f7c6dfcb9be6b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://oniceh.ru/uplcv?utm_term=printable+mac+keyboard+shortcuts+cheat+sheet PDF link annotation
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c669aebc9---7008971226.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606fffe6a46b0---pigeme.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a2b4499ca4f---wusidukosid.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cac52efb8---zovapimozabivedimopoli.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1cbd2b2bc---54617555141.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/nokafulavomogowulurebuz.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/7e62fc719e68698d93f954fa290f4544/21915664463.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/48894804675.pdfIn PDF document text
    • https://tecnicadovolante.com/images/file/910148971.pdfIn PDF document text
    • http://ttc-investco.com/img/files/29202792807.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/38169640605.pdfIn PDF document text
    • http://giovanniseneca.eu/userfiles/files/kebadipaketameseje.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/v5786lak9178ol7f2itqe12933/zodezibopenamubatowuki.pdfIn PDF document text
    • https://sportsslife.net/upload/ckfinder/files/75599571346.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/pumuguvizojilesafozijalur.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/ck65rjlirvhd17p52jkrhf3cb7/13848380422.pdfIn PDF document text
    • https://numberonerevolution.it/file/dujunipevobatokotip.pdfIn PDF document text
    • http://awkontrakt.pl/ckfinder/userfiles/files/vekovop.pdfIn PDF document text
    • http://qctc.vn/upload/files/sofewanisiru.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608489c0d70aa---98856595777.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/66454569444.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2266350c73---85213235489.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_off0000dfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA8 11084 bytes
SHA-256: d2065384c3775bd5324456c08fdfe2775b758f0e4d4f18d74b17134cda3488af
font_01_sfnt_off0000f94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94E 17064 bytes
SHA-256: 9249797fce89046eadbc381042af307c2f7967af87c90ccd854e352886d69d20
font_02_sfnt_off0001260c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.