Malicious PDF — malware analysis report

Static analysis result for SHA-256 012dd207a4c2412f…

MALICIOUS

PDF

103.6 KB Created: 2021-07-23 12:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 9467b4b76cc1e63aebda083f8a6cb40e SHA-1: 42263c3a21c25e8064bfb54315e01000c515faa9 SHA-256: 012dd207a4c2412fb1c2018c405d046941fa315e2d071fd1a6aea6a59dde34ab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to compromised or disposable hosting domains, likely intended to redirect users to malicious content. The presence of multiple external URIs and link farm indicators strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

Heuristics 6

  • 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.
  • 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 http://01host.ru/userfiles/files/89254697811.pdf In PDF document text
    • http://brandnewgoods.net/userfiles/file/sedujap.pdfIn PDF document text
    • http://farashimirooz.com/files/36152602684.pdfIn PDF document text
    • https://dannysacademy.com/ckfinder/userfiles/files/jimipagomitarajurajovasa.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/8439649636.pdfIn PDF document text
    • http://dogoxuavanay.vn/uploads/files/kejomebasipusemipuzet.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/vphtb1i9d7uhbhupcmc7to96p4/birejisewubi.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/f6jl7v40n1sggpregkuv7kunp4/rapasarujadedoke.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a23e6623c90---57808542125.pdfIn PDF document text
    • http://songhandiban.com/uploadfile/file/2021061819342373499.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/s098hob80ktqal7l2adp8lo6t2/gatovezowulanolibob.pdfIn PDF document text
    • http://ondrejkocar.cz/img/file/64524779230.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160b0ded2f3e64---19120514248.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fdb622befd---16613267947.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/30283224767.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/ec560gfd7rmt1lng1e8uudb507/finenu.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092deb67d8c1---wagunidonoseto.pdfIn PDF document text
    • http://kiavysocina.cz/UserFiles/File/vezifawubepazunolozoreb.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/3b0862ac4fea99f5b9a7a6bb07d04588/lavinonesiwemijaja.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/pa598am6ap8t2d0f7lv8hvqned/15796813831.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4a8412a0c---49605000667.pdfIn PDF document text
    • http://keysrotary.com/clients/d/da/da683cbc30bfd632b0b364d14bdd38fd/File/bexabesopijakumuliviw.pdfIn PDF document text
    • https://dolaodong.com/userfiles/file/47479055590.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f639b6701---kifekixom.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2eeb33f6c2---47563821344.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/95018620340.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/49c6371a698c3b4d5f70f87147296ef2/lujabi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=genius+and+outsidersPDF 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_off000133bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133BD 10332 bytes
SHA-256: 1e43970bdb08ef8bc7ceba1ec5dcc2b86987624b42ffe6729baab773392d56a3
font_01_sfnt_off00014b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B31 17004 bytes
SHA-256: 2a7188b1d224c0485ba2010fe90319821a0c5a5d258423de541d2dcacbb9d575
font_02_sfnt_off0001778d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1778D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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