Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fce327d7fb68aaa…

MALICIOUS

PDF

82.2 KB Created: 2021-09-18 07:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 01ae50acc8bcc1f6a5867a9777b56888 SHA-1: 54d62c6f627d51371afb0f109621106ac4e4d15f SHA-256: 0fce327d7fb68aaa8bf13cd87813a6d87abeac73235ab10a30d8b6dbe999d8d9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to potentially malicious or phishing sites, as indicated by the PDF_SEO_DISPOSABLE_LINK_FARM heuristic and ClamAV detection. The ML classifier also strongly flagged this PDF as malicious. The primary function appears to be redirecting users to external content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://infrive.ru/uplcv?utm_term=drag+cars+in+gta+5
    • http://detskypohar.cz/upload/file/kemesobuk.pdf
    • http://adamlegal.com/userfiles/file/selerigipotisaga.pdf
    • http://vagtteam.dk/userfiles/Files/15069444124.pdf
    • http://transportdiverse.com/uploads/files/8899296881.pdf
    • http://mengnuanua.com/app/webroot/files/files/92133295073.pdf
    • http://cissi.it/userfiles/files/18801836417.pdf
    • http://studiorestagno.eu/userfiles/files/zipezelavexedosefomatarav.pdf
    • https://envida-nieuws.nl/bsb_website/upload_fck/file/95096361222.pdf
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/c9f6bc022338c9c7c895cad6585d3253/rumasidemukamomiwiruze.pdf
    • http://gyermekhaz.hu/Content/site_images/files/renokuf.pdf
    • https://www.peltonfell.org.uk/ckfinder/userfiles/files/60869329242.pdf
    • http://studiotecnicoprato.eu/userfiles/files/68697431289.pdf
    • https://www.groupe-coelho.fr/ckfinder/userfiles/files/jepudagufidorazaropar.pdf
    • https://demideopool.ro/ckfinder/userfiles/files/bagevesosukovubakogilejot.pdf
    • http://dom-2000.ru/ckfinder/userfiles/files/fuvuzogilolutelamaso.pdf
    • https://kermanrooz.com/img/files/48662745927.pdf
    • http://zgic.ru/!upload/files/97189695429.pdf
    • http://iiiemjobs.com/FCK_Editor_Images/files/25030224896.pdf
    • http://ihdbd.org/upload/files/69054374486.pdf
    • https://muzeumkonstancina.pl/attachments/file/zigapizitofojisan.pdf
    • https://mandaljeebanking.in/ckfinder/userfiles/files/fovijerax.pdf
    • http://ciccioinpentola.com/userfiles/files/xofudajikifolepopot.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de51.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE51 16792 bytes
font_01_sfnt_off0000f668.bin
3f257af5d64bd076ff3562779e9c0ac89ba729751b2e5214fbe2c66bdeb43884		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 10244 bytes
font_02_sfnt_off00010d93.bin
bc39928b3e75bd9917145cf2e327829414891e26f51b7a917107723215d53796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D93 17748 bytes

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