Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24fe3ab9c37b831…

MALICIOUS

PDF

83.8 KB Created: 2021-07-01 10:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 7d62a4181dd1c079344b623e1ec0b5a1 SHA-1: 498b911549708b5dd32ebe4a4fb2ed11f199ce74 SHA-256: a24fe3ab9c37b831b8c9be98d633976e4951270d437b263f82737d40b5dca191
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains a link farm hosted on compromised CMS uploads, with numerous distinct hosts, suggesting a distribution mechanism for phishing or malware. No scripts were extracted, but the structure and URL patterns are consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f39c0be498---24714689139.pdf In PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/mexajevorezemeselapis.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607821783eaba---71344621456.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/252f5um3dk5d9nrstkknqa2hi0/zovobujuvig.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/f0b1b542930e388b3b34e7c62fc2d365/8682316284.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eaa90e5948---97394859691.pdfIn PDF document text
    • http://ecogestval.com/userfiles/file/nakimo.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b895ba174---tekiwavunekiruvekujewogu.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c3dd611e4df---83617871442.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/83780d7312dea78645223610bcdec94d/kaxalap.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/73609207368.pdfIn PDF document text
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/481e93c5720b65bd2fe466226353f3b3/92877276112.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160864776c6169---21322185049.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/luveridumeviguvulidoze.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086920ea8b8a---52589261685.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/74c7ede997a6d83ebffc5f584fc1afd0/nexogobakazabi.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609eb7cd891f6---65891251862.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/d3538fbeba27fc40b3efaf89fb1ecb25/fogepegojodujepabadog.pdfIn PDF document text
    • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/9664710607c86dcb63a3f310ba783c33/94471538723.pdfIn PDF document text
    • https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/96d53cc814827d96435ae334dc8ca726/98937635106.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/f0b99edffd8d3750a48612d8c701434b/94773740766.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/53620822e5ff8a5d6261911b2fefb297/votelubojofevoxokale.pdfIn PDF document text
    • http://immodraft.nrw/images/architekten_agentur_images_/file/39959926570.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=relational+algebra+in+dbms+questions+and+answersPDF 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_off0000defb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFB 11108 bytes
SHA-256: ba410be6260f87ff482352179ca6f4fe009febeea798ba0932160d2a38103afa
font_01_sfnt_off0000f86b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001107d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1107D 17836 bytes
SHA-256: 8d19d5071c789a868bade4d22e11f9074b60bfcbce80137552486f5abcf3f2f3

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