Malicious PDF — malware analysis report

Static analysis result for SHA-256 a261d010dbf2f877…

MALICIOUS

PDF

82.4 KB Created: 2021-09-04 17:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 277fa5b78c45fe08cece2f2ee89c4c9f SHA-1: 37f78eef87a404df086116e4759e71ef9012941a SHA-256: a261d010dbf2f87750667e721659230ab5c4145ad43a87758002a1057208023e
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 malware distribution attempt. The document functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting. These links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://statsale.com/data/upload/ck/files/gevevekor.pdf In PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba915da842---likakigetazaleva.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/29662253063.pdfIn PDF document text
    • http://circuitoinsulargc.com/documentos/file/16721871175.pdfIn PDF document text
    • http://schokozentrale.de/idata/vogokalerenajas.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/vunerimijebuxatelezanizeg.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/34b2259c47daa0289baad8b97567973d/5104332720.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/ond5un2s1a0po2c26l167255s9/xadusati.pdfIn PDF document text
    • http://batiment-tunisie.com/userfiles/file/65903728549.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/2ced4c419b9ee2a3120d9cf83ab41d6f/46300161536.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/5765743070.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/745bfad800b11d7baf43804f9b10359c/jutuxibemufazup.pdfIn PDF document text
    • http://geostudio.eu/userfiles/files/43185480614.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b81efc53dbd---93123513560.pdfIn PDF document text
    • http://ecogestval.com/userfiles/file/18916655756.pdfIn PDF document text
    • http://zimaletto.com/uploads/file/tafimirale.pdfIn PDF document text
    • http://osstemcardiotec.com/files/fckeditor/file/1967262105612065b0e794f.pdfIn PDF document text
    • https://magnettoptan.com/upload/ckfinder/files/taxoxematazorunowozu.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/37132bb1dc2ae747d6a0e432fd0c0e3f/14019668824.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ddae4a84e27---94883933484.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160ba9503553c1---71434171292.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/grhuj12dq51trdi1fp94voq1nf/liteguxeruwuwiv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=difference+between+dizziness+and+vertigo+pdfPDF 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_off0000dd51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD51 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF568 11104 bytes
SHA-256: 863c61c10b583524c4cf44d1e4adc77fd80a28f2d020ad7f7bebe066453774d5
font_02_sfnt_off00010f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F24 17368 bytes
SHA-256: 0046dd5045dcae6bb8fd97ba10aba8be91cf64a7f2ef6e4398c470841d5710f0

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