Malicious PDF — malware analysis report

Static analysis result for SHA-256 480358f3d13f5ce9…

MALICIOUS

PDF

179.5 KB Created: 2021-07-02 23:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 46daca5f74728e0236e949c8faeb74ed SHA-1: 98130da5c9ce4a26f21367c4e282deff2a5ea2b6 SHA-256: 480358f3d13f5ce9f5fcffcc161f0c14a9569ee1438c966229d8db261f6890f2
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary attack pattern involves leveraging these links to potentially deliver further payloads or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9428

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 http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16094a73eb9b64---lalozafunojekonimokodiga.pdf In PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/7d7f948af8a24614d16b83a8d4ea1862/paliw.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a50fc390cf---rojuvazixamibonisose.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/93924505273.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160767d9a3f0ac---tebataz.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/8596f51621f6636a3bebdbaf68fdd559/zewaseralitorisagegoritid.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160838e54ab1de---30475374164.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b732640914e---31246539541.pdfIn PDF document text
    • https://mangonebike.com/uploads/file/miwevi.pdfIn PDF document text
    • https://memoservicesrl.it/file/nenatuvopadu.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/rowakirojigidigejisoxume.pdfIn PDF document text
    • http://yfatc.com/userfiles/file/3382653215.pdfIn PDF document text
    • https://advance-pack.com/editor_upload/file/83104298176.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c1bd07595ab---69777642634.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/835498330.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b943171527f---nekinedasafobodigufowa.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///rujebepibutitolepatuf.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/6704d165f0f99993d1ae4fb0e90c4f89/41103460121.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/7846066223.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/6c1ff1e05f405d7c9b283bcf4465da0e/wizuvapawuzixikejisija.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/499a40279321f7f75dbfc137070a2689/96556502767.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/d07f2bfd961d0b5679e4bb662ac4980a/darijid.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/6s4tvhqljinip8d78jm5aon9d3/ruzuje.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aade824f08a---jerusivuvotikagevegoxuvuf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=kagamine+rin+and+len+daughter+of+evilPDF link annotation
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001baa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAA3 21716 bytes
SHA-256: 4d201994eb719762606560e845090bea6f1f6f4179769f940ad6f886b458b83d
font_01_sfnt_off0001ef78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF78 16192 bytes
SHA-256: 97e3f73a58ccdd4784c9ae1678d9f90717e6b6d0c87c36bf93adb8865ef65ebd
font_02_sfnt_off00020505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20505 10792 bytes
SHA-256: 5776b7f478b626a91726fd229bb61a4fbaddce3b1a6825c6bedc2b2da5436b3a
font_03_sfnt_off00021d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21D69 50712 bytes
SHA-256: 0e9e05c5f30449168522ea6a20261e30a9beaa2ac9e0af4157de95b8271a78fd
font_04_sfnt_off0002a6e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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