Malicious PDF — malware analysis report

Static analysis result for SHA-256 362b116af0acc46a…

MALICIOUS

PDF

88.8 KB Created: 2021-06-29 02:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 74b0ed2a278885b011ebbdd6c3460328 SHA-1: 509c772a10d27b6a7066c34d652c860ed73c0865 SHA-256: 362b116af0acc46abc18130d4740afbc61d405652cd6dcac9f8167f52db09034
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites acting as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://altbuket.ru/files/27127609807.pdf In PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/83cfe49f584b764e48156b2ecdfc03b6/roguze.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/v5i71uqnof240c5da58f2apmev/gomatajobaxewivigosu.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/0mi50hookd5vj4k3sp4gjs9r91/dumilolufijanesisabe.pdfIn PDF document text
    • http://banphimchuot.com/userfiles/file/xugimitu.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/ncrjo2sci227ugac02j4tdhbg6/kovoteva.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff2253d250---13232153515.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607228b1a3850---bevetuzavugowesew.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab830630b7---naxedi.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/foximap.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd40e13434---13045192383.pdfIn PDF document text
    • http://w3-japan.com/js/upload/files/jitunetokojex.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/zumefetetanerarigukutete.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/03190d9066c89bfa0a70c678018241db/94993768215.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb0c723898---91170322090.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/qbbrtmm7qu21krgg4kvh4b0l2j/gububolisexigebepulaxajut.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/5b0f257e75d9b11f74b5839d0874c2ae/75799513118.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ddab26621---13455301531.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b62c4f338e4---pejesekabivopogasepa.pdfIn PDF document text
    • https://avela.md/userfiles/file/23676267253.pdfIn PDF document text
    • http://daphongthuyhueminh.com/uploads/image/files/tokevovunigotised.pdfIn PDF document text
    • http://candientushinko.com/images/file/89526452940.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/acb30263f2469d7227b2eb05c03be640/tinoxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=claim+and+evidencePDF 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_off0000f9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DD 17360 bytes
SHA-256: 7e8ad44dabd906cf548fc372036ca10ebbd04b95479cb09da64e4794104e3240
font_01_sfnt_off0001277c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1277C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F93 10144 bytes
SHA-256: 061865456cfd9d6934fa4246162d34a2544334969d9ffc6ab5f17b6637e6ea47

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