Malicious PDF — malware analysis report

Static analysis result for SHA-256 213434e606b445b8…

MALICIOUS

PDF

84.1 KB Created: 2021-07-15 14:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 38b6a58e2128fc1fee0d2f092726600d SHA-1: 5087d2d20bb2b06de5ff98bcc77656b9539b3635 SHA-256: 213434e606b445b8cd0d910018c4d8dac68da915da7ec3c1bbff4e46affae58b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised websites or disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious URLs, which are designed to deceive users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://nomylo.ru/uplcv?utm_term=online+conversion+from+pdf+to+jpg PDF link annotation
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d42b9397c---77238487635.pdfIn PDF document text
    • http://zerosquareonline.com/file/83198727554.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/favegelopagidigajebutasim.pdfIn PDF document text
    • https://clove7.com/userfiles/file/lemasonabun.pdfIn PDF document text
    • https://inverpalmas.com/aym_image/files/mipovitafurajivafama.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/f848df3b70f79eee0609aa1f170d149c/75043992827.pdfIn PDF document text
    • http://cga82.com/admin/File/robuvimul.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160e1eec85450c---47355692662.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/oa7a6f2hqlp5vvhsu3jdqjepot/82828241153.pdfIn PDF document text
    • http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/84187213405.pdfIn PDF document text
    • https://behagi.eus/files/galeria/files/55294424797.pdfIn PDF document text
    • http://busanpc1.com/upload/fckeditor/file/70279697533.pdfIn PDF document text
    • http://pleasanthillpchurch.com/clients/5/55/55aa087cacc886b2254ddcc242c0699b/File/jupaxikupenifadul.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/2424176597.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b35a6a30da5---timixakixirezisikiguporub.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607059808a78f---vakaxozazamabiparex.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/8ab74636bc520a7e403db2e1e430f897/38247098556.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160b882d497023---toxoso.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d488c20a88---valopepawopifetofivomeluj.pdfIn PDF document text
    • http://myconnect-thailand.com/image/upload/File/72772890726.pdfIn PDF document text
    • http://jngf.cn/files/file/61345765093.pdfIn PDF document text
    • http://vina2002.com/uploads/files/jasakadasafuduwunumisis.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D2 16964 bytes
SHA-256: 1f23d231ba47cfb288bfd1b936d34005615ab3fdc27cf97ffa51c1748b80bdd1
font_02_sfnt_off00011439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11439 11020 bytes
SHA-256: fc434302c3dea0e46cf65ca0eadf5a08f4f142de52ea372dd328acc2a832203a
font_03_sfnt_off00012da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DA4 16076 bytes
SHA-256: a671d37c7b3b889284622d243fc9727f378cc914a66da79eb58e164c6b93b0ed

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