Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41de26e1fe44561…

MALICIOUS

PDF

80.4 KB Created: 2021-07-03 14:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c65c5c21634516588b39a71a0eefd1cf SHA-1: e84bcb6e73c0aa5e4c23cac7c9a704f581ccdcf2 SHA-256: f41de26e1fe445618413b8d701b20b93827487a539c29655e8833685e854d62f
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or are part of a link farm designed to obscure the final destination. Heuristics indicate these links are used to host other PDFs or potentially malicious content, aligning with a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://superfishinglewood.com/uploads/files/wowonu.pdf In PDF document text
    • http://adbuilder.at/ckfinder/userfiles/files/35905669682.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c453d3d8cc---xosugetafinimoriruzajuw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb251bdadd---fajopufomibakiralomur.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/40ae541ad9946f32df65d7a5edd287ba/vemakogokesanoneronax.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/21806765196.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/5a2095255df0c1baf0e97816d35bbffe/nikoripepokolavimisu.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b898e5021b2---lumelivajomifuv.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609885e63de19---xolatidatot.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/7bvlfad3mnmmrfn86lrlk9eod1/tarid.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/wepidi.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160c9ef6519d34---94731892571.pdfIn PDF document text
    • http://fedime.org/imagenes/tefifalaxegegixeva.pdfIn PDF document text
    • http://datavincity.com/uploads/ckfinder/files/pikefolo.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/6ba3a0b7141ada83b8ec7ee966406fd2/mufukixod.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/46075456664.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a5836f16e---20661181800.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16070a1d380cca---pamerakumujexijasu.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/23711218769.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8acb461f2---dajomixudive.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea7ea7e3fe---xunenow.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160715b85ce987---18101336812.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/zudobax.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0f3b1c41e---mubibumipepa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=timothy+and+the+dragon%27s+gatePDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD725 16612 bytes
SHA-256: 783b414d3514db16e888393b886893f71d9a0b8bd9c3fff2f5bf99ddf7d3ec51
font_01_sfnt_off00010221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10221 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A38 10760 bytes
SHA-256: c3e284ec590847d1a6af3277ddc8bc463edab6e12cab9f47d7a2d17c32a3424a

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