Malicious PDF — malware analysis report

Static analysis result for SHA-256 905cbd7b96656085…

MALICIOUS

PDF

124.5 KB Created: 2021-07-02 18:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 92b50fa660d0599d385f43d2dd566861 SHA-1: 3a09529b07b7136c7e9c65e72006961bfcd30f15 SHA-256: 905cbd7b96656085262ff37f3dbcd9aca79d1b3c66b418508f6756aa368c650d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV, indicating it is likely a phishing or malware distribution document. The file contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the presence of external links and the overall structure strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 https://garglob.ru/uplcv?utm_term=main+characters+of+oedipus+rex PDF link annotation
    • http://skiflogistics.ru/userfiles/file/tezijusedonud.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751f3dcb5f8---90932707893.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160901ded0ed0d---14156543643.pdfIn PDF document text
    • http://camwater.org/media/files/69317741017.pdfIn PDF document text
    • http://harposwebdesign.nl/app/webroot/files/userfiles/files/43909649138.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0bf23b5c6---21635728670.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c477f206b61---gemix.pdfIn PDF document text
    • http://abnicum.com/files/file/kidiridasedadosudala.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/bafezuxugujeremitan.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16073dedbdb2cd---dokudogupevunafolabinuni.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/e99431c63314772719dc7d5eb48a7737/gikigimujigojajax.pdfIn PDF document text
    • http://bigxra.com/uploadfile/file/2021052800212373499.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/65fe2e2fd63938653010fe3762cf865f/fogetabefakumeboza.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160877cad2638a---47238669796.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/84952f2d086935c25b5d8f2b61f95538/51312758891.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9e886a87d---figovokumebef.pdfIn PDF document text
    • http://vhktn.at/images/content/files/xawawiwazimi.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/53554747135.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c27035b10---bufedo.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609449b24f83a---jabemegoderas.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/71863bcd4213efed7a77ef66ef85b261/57919308671.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/mu0bpibu9s3tggnignit836oku/74611203538.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608444c87b316---wimelanolurifofodetex.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1607731371cb72---89523842502.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_off00017ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FF7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00019809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19809 20224 bytes
SHA-256: dbc6cbd2af95fe5e4719e50817444bca49d3bde35d4165da2d799554f99338ec
font_02_sfnt_off0001cb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB2C 10868 bytes
SHA-256: dcbb07f6b36ba32a79ceec776a24286ffe97e2e5976733c7c34a8b6293f07b03

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