Malicious PDF — malware analysis report

Static analysis result for SHA-256 769e6ea8da482eb0…

MALICIOUS

PDF

92.1 KB Created: 2021-06-26 12:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 7b13118781350ef0a22a7069e86bcb09 SHA-1: b5bab2621c70f0aa7eab9f688e7231ed3120ddd9 SHA-256: 769e6ea8da482eb0d3dfeef7acc5ed39d7735d02cd5a5ebbc254985ff09891c5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics indicates an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://ketchas.ru/uplcv?utm_term=army+national+guard+drill+pay+2020 PDF link annotation
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d93e2591b3---semidikakebifovikepomejos.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/novivizudugupilepis.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/13504879916.pdfIn PDF document text
    • https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/2qkn17ds40160r526l473lf7a9/fodemixim.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/lerozevipipimumor.pdfIn PDF document text
    • http://waypl.pl/upload/File/boxiwa.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7b2d1f64d---fawododuniwepimij.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/93797540788.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/4f1299f7e9ee7585c67e9f8dd352f4a4/dekugitafebokofeloritir.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/6d7ca17ce4380139569c6e929c5c8c66/32397527250.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/2g7pih80ora9oo4ph00udu36p6/23140754217.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb3ea31608---73790194858.pdfIn PDF document text
    • http://austintownfitch1980.com/clients/879833/File/vimanemupuvipej.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083a02dad002---93995950803.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/22f5b9034462761861564813315ea0aa/76762551617.pdfIn PDF document text
    • http://arablift.net/userfiles/file/pavexawojukopirevojepan.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/xipibibu.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c492aac3503---buvavigologiliko.pdfIn PDF document text
    • https://weyergans-hcc.lv/userfiles/file/3670424461.pdfIn PDF document text
    • http://aptchasers.com/FCKeditor/userfiles/file/mepivemakelajosu.pdfIn PDF document text
    • http://abpaluso.com/upload/file/81189585852.pdfIn PDF document text
    • https://hohsingfiber.com/ufiles/files/91575006177.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/jqr2nhbbok35rrpq9ml9lgm9g5/46776309102.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/41661002221.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_off000101b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000119c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C8 10872 bytes
SHA-256: 87ab6b3db7370be0d1ffab9f83fc7ef2870c7de87171ae2bc6dbee91e03df1ff
font_02_sfnt_off000132b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B1 18884 bytes
SHA-256: beca9de3f632332e598bd1cdd057ae8e2952a31c77046b35f19c3799bf70051e

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