Malicious PDF — malware analysis report

Static analysis result for SHA-256 286529f6fbbc6577…

MALICIOUS

PDF

85.0 KB Created: 2021-08-24 20:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e3889e5f22505cbf6d5dbe8b4bc2a1a2 SHA-1: 67e2c0a8415c13b53d0198e61e456ad5c5efa7a4 SHA-256: 286529f6fbbc6577f8d32f8637cf55d0a0ad971ad8591e4083573565db89edda
156 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://pixomot.ru/uplcv?utm_term=hypercharge+unboxed+switch PDF link annotation
    • https://aljazeerahdrilling.com/userfiles/files/gozulisa.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/hp4jp0de5rtf21fgterh8praup/vabazosowevusiduri.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/34802948789.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/db5752c1f3d22c858fe606588458a86b/miliwelogixakadapofufel.pdfIn PDF document text
    • http://gidaero.com/upload/fckeditor/file/26735175902.pdfIn PDF document text
    • http://townofwinslowin.com/flash/townofwinslowin.com/file/34005200661.pdfIn PDF document text
    • https://classykitchen.pl/web/uploads/files/refuvusogebezaviwifemukin.pdfIn PDF document text
    • http://maroba-zirndorf.de/file/sosujejetilavi.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160edbad1a8929---42291096348.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-8-3/20210803005051407620.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/a64158d9d37ce4ce6dc55998bd22e24a/14244877709.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928fb3bef0b---55452912768.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4008561264---76014571765.pdfIn PDF document text
    • https://marblobathware.ph/app/webroot/img/files/95672595124.pdfIn PDF document text
    • https://cyklo-wellness-penzion-palice.cz/content/rivozikipinobezebesa.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/sipiledejex.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/29c8a8073cfe557981275c02b3e8fd17/sisetogozinetuzuke.pdfIn PDF document text
    • http://96rangjai.com/userfiles/file/vawuperugoxefom.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/56186478603.pdfIn PDF document text
    • http://profesniprukaz.cz/ckfinder/userfiles/files/42432195959.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/gegemaxuvewofozipozodobag.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/c7240ead3f33c2f6c545865067f27f7b/12566212353.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/00ea766c8c4064a12de82adc23c9774c/fobinimimesolezotodasu.pdfIn PDF document text
    • https://beautyreviveshop.com/newerac2c/userfiles/file/zuvomowikolowujebo.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_off0000e14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14E 11280 bytes
SHA-256: 3f67cb1f16f070f7be12dbc9266ede485edfdfde00917a1dadea7e2df250d16f
font_01_sfnt_off0000fb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001137c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137C 19308 bytes
SHA-256: 901a38fc0c4dbe7eb2c461c9cb06d1581231e467eb82c598130931f1038c1ab5

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