Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ade470e3c23d08…

MALICIOUS

PDF

79.3 KB Created: 2021-09-20 08:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: bfebe7204bf3cc1c0bd05d1cd0f2b9ae SHA-1: 7a1e5f5df28746c5b32b8aa223bd4f28d9eba764 SHA-256: b2ade470e3c23d087a349ec68c5394fe876bd0f0324ba5e758845feea2d39bb6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious downloads. The presence of embedded URLs and the nature of the links strongly suggest a phishing or scam campaign aimed at tricking users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://allytemp.ru/uplcv?utm_term=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+microsoft+office+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE PDF link annotation
    • https://alharithiforcameras.com/ckfinder/userfiles/files/57156365243.pdfIn PDF document text
    • http://haiqi-machine.com/d/files/lakawetagopukinebu.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/21ca0c1158fc10794f9b87c05c0a09d1/jagerexezebu.pdfIn PDF document text
    • http://mawratanews.com/armedia/uploads/files/lakemowenuru.pdfIn PDF document text
    • https://menu2uplus.com/images/file/34114641176.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/geveniradawefu.pdfIn PDF document text
    • http://georgekoldun.com/var/upload/file/jowagudadawerax.pdfIn PDF document text
    • http://gymostrov.eu/gymostrov/userfiles/file/totodakovululivupilo.pdfIn PDF document text
    • http://www.fred-robin.com/ckfinder/userfiles/files/xubikofewududubemaxer.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/8283797784.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/16491663662.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ecfdbc18d1---56188272029.pdfIn PDF document text
    • https://altaitur.com/ckfinder/userfiles/files/wiwolabekeravo.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/wekuxe.pdfIn PDF document text
    • http://misosmile.com/upload/editor/files/libukuxubusajabexav.pdfIn PDF document text
    • http://originalbau.hu/imagesfiles/tevujab.pdfIn PDF document text
    • http://engcaphone.com/_UploadFile/Images/file/motefodewefamilaxefumanox.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613526e80411b---bagusigegatimimaf.pdfIn PDF document text
    • http://dnepropress.net/files/file/fodafefubemejagik.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/161438abe56d06---31695465029.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/22798562465.pdfIn PDF document text
    • https://eyescare.vn/app/webroot/upload/ckfinder/files/josavimulekemosir.pdfIn PDF document text
    • http://hoya-system.com/uploads/files/202109041402563473.pdfIn PDF document text
    • https://bikidi.com/UpFiles/WebEditorFiles/file/48509583041.pdfIn PDF document text
    • http://www.bordadoindustrial.com/ckfinder/userfiles/files/kudawupusadobanexoko.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_off0000bdd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d5ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EA 12024 bytes
SHA-256: 509c487e5438ad5051bc65075af539c3591d1212a34ff60c093e91de3dda3300
font_02_sfnt_off0000f19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19B 23608 bytes
SHA-256: 9309723898659f4d8d7c79558c4d1337373e08b0fd541b61f80a0272253e7fea

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