Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c476882080e026f…

MALICIOUS

PDF

89.1 KB Created: 2021-07-22 14:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f1e60d6848d4c87b0bd02aaf24d4f818 SHA-1: f47d6fdc6323811cfec8bb23fdc1e657be1f0a5d SHA-256: 0c476882080e026f51c143ba703863e5e02382cec6ecfb09338a3828af9fa3d4
156 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates this behavior. While no scripts were extracted, the structure and URL patterns strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d212a339f6---dumofezagixebaxiwemo.pdf In PDF document text
    • http://land89.com/ckupload/files/wodovugaw.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/47237665602.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/f63b06cfa1d98b8c38b5128430a84786/tovirogixagakisuk.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/65537760872.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d22c7cb56df---97548459390.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f6b1d831df7---tulavagasarire.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/31809066869.pdfIn PDF document text
    • http://tvkinter.com/file_media/file_image/file/59846105211.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609111a3e5721---28614459274.pdfIn PDF document text
    • https://tidurmalam.com/contents//files/venizezesegarogexalomep.pdfIn PDF document text
    • https://cowichanmusicfestival.com/userfiles/file/xetapufumabupobilezudevun.pdfIn PDF document text
    • http://chinajnbt.com/images/upload/File/98007580730.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/4a870479fe14bfe4e1430c76cedbf70b/63743103261.pdfIn PDF document text
    • http://autobedrijvenindex.nl/images/uploads/19428993082.pdfIn PDF document text
    • http://xlsferrosilicon.com/d/files/goveraxoxujolunamete.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/43b8adc497c6cda6820c372e7df1febd/tupalexujivoxabetimuze.pdfIn PDF document text
    • http://crackershrimp.com/file_media/file_image/file/mobuxegujus.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8759da86bc---bofomok.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/74e4bf0cb171f7e55edc67e3b7e398cd/mukafukonupumif.pdfIn PDF document text
    • http://paradisoseminatrici.it/userfiles/files/63880734345.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac767d0671---37431371538.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/8bd553c884ff416301572d6ced8c6c26/67598317325.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=happy+rose+day+for+friendsPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF415 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C27 18508 bytes
SHA-256: 33e78f167d04d7f57ac5ca86b5a914e065b62dce9d8435a7ed7a46e77c72b7e2
font_02_sfnt_off00013d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D01 10452 bytes
SHA-256: 0a78c520e04e40f85a249c3b8e9ecaf8ecd6227e43d100276aa3466f44bb17cb

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