Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e08b5a010d1422d…

MALICIOUS

PDF

96.8 KB Created: 2021-06-28 01:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 60fa292444f8f6f6bf348c52e9a1b4e3 SHA-1: 1528f887168d98d4bd0ddd974ab4b4cbd57f66d8 SHA-256: 7e08b5a010d1422dd06c50c19fd337a9b154ccffc193f647995b7ff7c0187b1d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external links pointing to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing pages or download further malware. The presence of JavaScript suggests an attempt to exploit browser vulnerabilities or execute malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://www.jedeminute.de/wp-content/plugins/super-forms/uploads/php/files/86bj8nnsvcbja5fdt21svnkhs4/ferapaluze.pdf
    • https://imahima.xyz/js/ckfinder/userfiles/files/59783017343.pdf
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/50d702ba6b469a6f948464bb90879325/15051360049.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/4f4e0f8cec073b6a85de04a94647c5ae/bizedarebevekafinu.pdf
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/0efed9aa87abe2ef986a55826a047fdf/83233411760.pdf
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d64eb7bfd5c---74879150885.pdf
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a81da2942b0---85584779584.pdf
    • https://adian.eus/files/galeria/files/18976247575.pdf
    • http://bannails.com/fckeditor_userfiles/file/12104878436.pdf
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078cd41d78d2---7509173190.pdf
    • http://alnadaoil.com/userfiles/file/78599770531.pdf
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bbcaf215cff---lozosoba.pdf
    • http://breakevenpoint.pl/uploads/editor/file/27074283793.pdf
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/9e6bc9e7bccd77dd2a67c06631395c72/bunoneneba.pdf
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec74ad554a---14823155256.pdf
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a95c303bcfe---zalawe.pdf
    • http://planetamama.ru/files/file/18508148750.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/6cd0613498ce03e9bbedd0e055a35a33/3231798729.pdf
    • https://nikoljski.com/ckfinder/userfiles/files/zirabelez.pdf
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/gepcfjopstq8n1ehla0fml232g/85462188592.pdf
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/5vabica9cb96etsuobr4m9llqj/48038977404.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=mind+your+own+business+definition
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117ac.bin
c7649b0e27feb710bbe4a0025ca16cb6d1829f4a03e417f533da95ba22b0d5be
pdf-font-stream PDF embedded font (sfnt) at offset 0x117AC 17100 bytes
font_01_sfnt_off00014417.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14417 16792 bytes
font_02_sfnt_off00015c2e.bin
8ed68a99b6bb3f9931329ec8b7dea559c33c79d0c657d72011ac93d2111bc586
pdf-font-stream PDF embedded font (sfnt) at offset 0x15C2E 10572 bytes