Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed54afd17e9ddb5…

MALICIOUS

PDF

78.1 KB Created: 2021-10-06 01:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 36bfd6bf13685734d5066478d099eb7e SHA-1: 838425926a9bcb121170c451146b020fdd849be4 SHA-256: 0ed54afd17e9ddb5ecd7d46dbba0e3ceb498a731a855d3909f7d1c6685ab9c22
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple disposable domains, a common tactic for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The presence of numerous PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, suggesting the document is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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 https://bodymart.in/ckfinder/userfiles/files/zatojizozes.pdf In PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/62661079619.pdfIn PDF document text
    • http://novo-foto.ru/ckfinder/userfiles/files/61254942839.pdfIn PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/bivosamibimosijunozet.pdfIn PDF document text
    • http://avalon-essenzen.at/userfiles/file/4274898257.pdfIn PDF document text
    • http://bettaletroom.com/file_media/file_image/file/vagunezeno.pdfIn PDF document text
    • https://myshalewell.com/userfiles/file/23932975656.pdfIn PDF document text
    • http://votava2.altrodesign.eu/ckfinder/userfiles/files/pepudiwobajizuva.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613567c0322a2---rutigexevop.pdfIn PDF document text
    • http://krakowska98.com/zdjecia/fck/file/67336089303.pdfIn PDF document text
    • https://www.lire-les-notes.com/ckfinder/userfiles/files/11428630144.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/a060ae45753f314daedf8113abffcd40/bilelo.pdfIn PDF document text
    • http://ecilingirler.com/resimler/files/61821126850.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/30106156241.pdfIn PDF document text
    • http://lrm.mcdonalds.ua/ckfinder/userfiles/files/lasumuk.pdfIn PDF document text
    • https://mai-avto.ru/upload_files/file/wosuvobobogi.pdfIn PDF document text
    • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/7714250250.pdfIn PDF document text
    • https://cmottaviproductive.it/uploads/file/71680297861.pdfIn PDF document text
    • http://cherriestattoo.com/ckfinder/userfiles/files/nibusumore.pdfIn PDF document text
    • http://hoya889.com/upfile/files/20211002181547.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e491fef657---buxudi.pdfIn PDF document text
    • http://leeandrewdavison.com/download/84559135749.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/tiwunowalenarulin.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///rupewe.pdfIn PDF document text
    • https://svetplus.com/userfiles/files/28959804752.pdfIn PDF document text
    • http://finalbrand.cz/upload/file/99470872113.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=non+metastatic+prostate+cancerPDF 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_off0000cc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4F 18296 bytes
SHA-256: 8114e34fcba635caa266001b62da938d5cda3dbaa1804a5c0b94d7afc1af0190
font_01_sfnt_off0000faf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001130e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130E 10468 bytes
SHA-256: a92a8e28188eeba2e42a1ab410a691ef1d452bf1c28ca28668a2bc3755a45988

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