Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbfc74bee3ffc81…

MALICIOUS

PDF

84.8 KB Created: 2021-09-03 20:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: de093b3d05d06892d3dfee7c9c05bb1c SHA-1: 6bed69ba18fae8e24a6d0fc92f4f94742e4f1572 SHA-256: adbfc74bee3ffc8176fa4f8890e9603e3f0551da419a1bd2a2bcf86839da1c31
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a large number of external URIs, many of which point to WordPress upload directories on various websites, suggesting a link farm designed to host or redirect to malicious content. The presence of JavaScript indicates an attempt to execute code within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/9eec7f98a8991d2da8af6341723ea97f/76247882463.pdf In PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/8bc009b16223d2ab38da10c56ec5d4eb/dizabuvuzuretemudavufid.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/f1a3b5d59f6158a1117f27036b2941df/jumavebi.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/edafevufofesuti.pdfIn PDF document text
    • https://m-astar.com/UserFiles/files/repegowabijilibuxuzija.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/21b68deff7ffd536b8079aaf749a0d74/fofagenipixabezuwazase.pdfIn PDF document text
    • http://orderleesushi.com/uploads/files/37853908308.pdfIn PDF document text
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6b6ec9032---ximofobi.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/83a29226d01fc4c264df3ddd4bfaf931/73488042239.pdfIn PDF document text
    • http://aimic.com/userfiles/file/63845091047.pdfIn PDF document text
    • https://anjingliar.com/contents//files/sanalona.pdfIn PDF document text
    • https://bankkartya.hu/js/ckfinder/userfiles/files/mokovebali.pdfIn PDF document text
    • http://trekkingsapatours.com/upload/files/78200092361.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091c590ad49f---26812512713.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/8aue2frronrkqof9veafi56vk1/17193468447.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/90997b62414a408d2d6ff7b6d91dcfea/71338305367.pdfIn PDF document text
    • https://gionggiacam.com/ckfinder/userfiles/files/kevipopepexul.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e97c3753428---93531538648.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f023f7f99e---turaruvawutimajo.pdfIn PDF document text
    • https://kham.vn/userfiles/file/23490770521.pdfIn PDF document text
    • http://kystar.net/filespath/files/20210825213632.pdfIn PDF document text
    • http://edallyshop.com/upload/files/pojuxudepulawa.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/b2a072d5ee8ec7b1741fe008b8655d36/wejobumanedewi.pdfIn PDF document text
    • https://corghialberti.it/file/gudevigapajezegojulavifol.pdfIn PDF document text
    • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607591edd5c67---zojevodinepurizufagi.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/brrhtosaq82j86763vu0s4gs2v/lifitolulazajukima.pdfIn PDF document text
    • https://kovosluzba-praha.cz/res/file/13218508582.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=rheem+furnace+manualPDF 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_off0000e82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10042 10268 bytes
SHA-256: eb26f6fa4f4fe499c08088f5776e72240f7028b0e83cb4a574b9930fe11eb65e
font_02_sfnt_off00011719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11719 18024 bytes
SHA-256: 006ef628fb711638664f86dc4cb8d4a025aaff70f72b95677055afbdd2fa308f

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