Malicious PDF — malware analysis report

Static analysis result for SHA-256 0632fa24c23a60dd…

MALICIOUS

PDF

83.6 KB Created: 2021-07-08 03:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ffbc3921cc2466c952ec0a81817cbcb2 SHA-1: d0d0bc437b436bcaf0933f52423f6d76818d87d0 SHA-256: 0632fa24c23a60dda43311e229aa2e05357e3b6a36460c3f94109916df5cf70e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are consistent with a malicious PDF used as a lure.

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 https://krisoc.ru/uplcv?utm_term=how+to+screenshot+snap+without+someone+knowing PDF link annotation
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c58d4a13b05---naralofulokijiroxunefu.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/s2i9a5jttdg3qdudf5qd9112m3/7007484345.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/zonutab.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ad7b3120185---fumuxusumibejaxikigiso.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609d6595e97b9---komezobivufegewiku.pdfIn PDF document text
    • http://hutbephottaihaiphong24h.com/upload/files/movidilina.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d257a894b6---87695135313.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/7ce06aadfd81b5a9c5cb5818dc6e50f6/73473142866.pdfIn PDF document text
    • http://exosportsante.fr/ckfinder/userfiles/files/84730680368.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/8ac8fc5d7061e852b2e68aeb8e3515ae/70574732955.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/56056013706.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/stl6keq5l2nd9avqjudlj7rn31/60907030513.pdfIn PDF document text
    • https://machnik.net/ckfinder/userfiles/files/91112521267.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa5e0741dd---77025930350.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a2dc4136f---zavokodugabovivolife.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a3633e6790c---nawowogitimine.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b68e5d8130---nowifitoxewatunobisaraluv.pdfIn PDF document text
    • http://scuolascifondocortinadolomiti.it/userfiles/files/33048176295.pdfIn PDF document text
    • http://ehs1958.org/clients/73155/File/47677481175.pdfIn PDF document text
    • https://nikosdimos.gr/userfiles/file/turoxo.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/8b7f998220038682b963c855a06fa07e/88525275729.pdfIn PDF document text
    • https://mediaget.com/userfiles/files/lefasivozazibugukufelux.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

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_off0000e457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE457 16672 bytes
SHA-256: 57dc536ffa360f33babfe76df002b590e72140b4dc9804ebb6a2e9127005be0d
font_01_sfnt_off00010f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001277d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1277D 11044 bytes
SHA-256: eab4489f2c52649dc508f363c710cfdc24584bf8337d387d88fa19ec14b191e0

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