Malicious PDF — malware analysis report

Static analysis result for SHA-256 07de2313c1832476…

MALICIOUS

PDF

100.8 KB Created: 2021-07-14 00:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 25bd4c19a3bccf2a5614d6b13544c605 SHA-1: f384547499440d3be0df773ceb48f826fdd51274 SHA-256: 07de2313c1832476e34f6d20a0f65d3a1bdb2310972fdc2a03d3be34dbd726b5
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file contains embedded JavaScript and multiple URLs, indicating it is designed to lure users into downloading malicious content. The heuristics suggest a social engineering attack, specifically a 'ClickFix' lure and a password-protected archive pretext, aiming to trick users into executing commands or opening further malicious files. The presence of embedded JavaScript and numerous links to potentially compromised or disposable hosting further supports its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://garglob.ru/uplcv?utm_term=get+bluetooth+driver+for+windows+10 PDF link annotation
    • http://thallo-food.hu/uploads/ckfinder/userfiles/files/gerapubokodexubatuguwekog.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/zirupujigaxewilalilatili.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/e971d924f53484e2f74795a8aa2f4841/80921534842.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/8a479ae03c858e7fc3e0be9e2ec5c87f/2344852538.pdfIn PDF document text
    • http://veterinariacomportamentale.it/userfiles/files/95470366542.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/lozifododepezorefofogog.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/15313145629.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/6a83aaab5b44cb236e53ddedc1ac72de/14549357020.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160db8174e8503---95416636903.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/sorok.pdfIn PDF document text
    • https://longhoang.vn/upload/files/37093975153.pdfIn PDF document text
    • http://w3-japan.com/js/upload/files/jixuje.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c9ff978d17---62958364555.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fafa93ba23---fujewirisegowum.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/c99acc04489edc6abf14d0c1b72e32e3/31591311761.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/n2l4c1g7f33bhfe1cragkneae4/81184374799.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fbd5b9897---zuwofozasalamopepuji.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/fvlg53pgp23bpf13in6vkco1a7/zukulazi.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/5ca62f7d23dad89019ddd807d7081062/50464342403.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/kefotufogizebewuvodu.pdfIn PDF document text
    • http://geometracosentino.com/userfiles/files/lipuwifekivuz.pdfIn PDF document text
    • http://urparitet.ru/admin/ckfinder/userfiles/files/99760102789.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/72891945011.pdfIn PDF document text
    • http://thermogroup.ru/uploads/files/dimiwuti.pdfIn PDF document text
    • 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_off000127b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FCC 10896 bytes
SHA-256: fd904f48d4d73dbd04367168fc294f84aababa603a5bffec002448a6874a19a3
font_02_sfnt_off000158fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158FC 17028 bytes
SHA-256: 3648651fe4db920bc2f19f6cb2619bffd0a17cb25e501636bdeb87b2f8d92eee

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