Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68f04829e13b64a…

MALICIOUS

PDF

91.7 KB Created: 2021-07-26 05:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 642f714aaf3c72acf1ca23ef57cf6fb4 SHA-1: 04a9f59ffdde84023aa96911dbd6316e5f985e0a SHA-256: d68f04829e13b64ac657645fcb9aa13b70f1f12238616d1f9e4d75f462dd2c01
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, indicating an attempt to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for malware distribution or phishing. The embedded JavaScript is likely used to facilitate the download or redirection to malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b940b85943c---vugapotumenu.pdf In PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1cf1bd4a2---rekebowemukezumav.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b30c7f609b5---moduwosufisapomozurij.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608afe9254eda---memesefomuw.pdfIn PDF document text
    • http://mexvp.com/ckfinder/userfiles/files/rupexa.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/020b126c164e526d13712eac0e20d1f5/95664917231.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/513e0a952385b2ca2443d2c6385e8691/30928148399.pdfIn PDF document text
    • http://simonhoirup.dk/userfiles/file/bedimo.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/magexuvifikijokabawuru.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/a9422fb56f76baf970d0252e4a34141a/bememamijafuxonifemif.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/f5c3b5e2d586762ba7c3346448b3f1d2/fubidonanusilarol.pdfIn PDF document text
    • http://makingtheturngolf.com/clients/9/92/925d9bae4ecf380f28dbe0e1390c16eb/File/vebirenilorod.pdfIn PDF document text
    • http://hiace-yoshikawa.com/js/upload/files/28922951604.pdfIn PDF document text
    • http://chinamakina.com/userfiles/file/pixetajilamejimap.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/xukojibevitegipuvufiv.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/537ef8f2386d174ddbb0251fb3a8cb24/fopoposowukobiseniwod.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d185b8b2bd---97589938366.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bcc3f29b4---wawekawebipebuzukon.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088cbf0422e6---jewobu.pdfIn PDF document text
    • http://wsm.hk/images/files/vunusejumoz.pdfIn PDF document text
    • https://eitmedu.in/ckfinder/userfiles/files/35302048541.pdfIn PDF document text
    • https://saporidelletnastore.it/file/vopenuwoke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=kgf+full+movie+tamil+download+tamilrockers+isaiminiPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6D 11152 bytes
SHA-256: 1bbac64b9e5b9b392c771b856e8d2c6d23576a5ed254cd8741385429672f751c
font_01_sfnt_off00011857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11857 17812 bytes
SHA-256: 225adce89cf4ceec69a7ffc002d3b73135c11dfd14867f430d4d795ea141d2b8
font_02_sfnt_off00014788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14788 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1