Malicious PDF — malware analysis report

Static analysis result for SHA-256 74574f44b02f48e9…

MALICIOUS

PDF

83.8 KB Created: 2021-09-18 21:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 001a9422e92b46bf292250c63278c31e SHA-1: 6c32148edcd8ca359325a0f7eb8f6c9f4ed5358f SHA-256: 74574f44b02f48e92ac52672308fe5cdb73241f401fe048493cd5369a9563da2
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's likely a phishing or malware distribution lure. The document contains a link farm with numerous URLs pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting. These links are designed to redirect users to other potentially harmful content, such as the embedded PDF itself or other malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://volandovia.it/public/fileeditor/file/47953534068.pdf In PDF document text
    • http://pietroquatriniarchitetto.eu/userfiles/files/kofupodasin.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613b61f6ac45f---jevumifatuvomoj.pdfIn PDF document text
    • http://bodybybodyology.com/ckfinder/userfiles/files/93417050589.pdfIn PDF document text
    • https://berbagiangka.com/contents/files/16005604377.pdfIn PDF document text
    • http://forti.in/userfiles/file/12774105966.pdfIn PDF document text
    • https://xn--23-6kci4asohe8k.xn--p1ai/userfiles/file/30688981398.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/71254506451.pdfIn PDF document text
    • http://sbriz.ru/userfiles/file/64740946220.pdfIn PDF document text
    • https://avenue102.com/uploads/file/xivepunusidoridusixoraba.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/4b3d5eed16016ee81796986dbb4bd12c/61393912298.pdfIn PDF document text
    • http://timebymtm.com/upload/files/45180907896.pdfIn PDF document text
    • http://stin-verdon.fr/assets/Image/files/lelewuxebufuritokevaxo.pdfIn PDF document text
    • http://akgwealthplanner.com/crm/files/vorimanebigag.pdfIn PDF document text
    • http://egyptlance.com/userfiles/file/xakikikazejow.pdfIn PDF document text
    • http://zetrade.cz/userfiles/file/94301402784.pdfIn PDF document text
    • https://corpusbg.com/files/fck/file/gerexulora.pdfIn PDF document text
    • https://essuances.com/ckfinder/userfiles/files/kiretolekesufitozomabemi.pdfIn PDF document text
    • http://printific.com/images/contentimages/files/62431969671.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/c0661cab9791f84739b05c3bb6e016d7/xefexujowedig.pdfIn PDF document text
    • http://bargiel.com.pl/ckfinder/userfiles/files/kivokikolixojopabupa.pdfIn PDF document text
    • https://millinerandassoc.com/files/file/11170319655.pdfIn PDF document text
    • http://onroerendgoedindex.nl/images/uploads/93231078418.pdfIn PDF document text
    • http://conblocmanado.com/pics/file/78210511797.pdfIn PDF document text
    • http://yejida.com/userfiles/file/pazimasaxutubijobo.pdfIn PDF document text
    • http://kondicionery-noginsk.ru/upload_picture/file/37996413621.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/81a7a6e625b580544f71d033ec25f5be/77670342341.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=mx+player+pro+apk+new+version+downloadPDF 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_off0000e0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E8 10740 bytes
SHA-256: 5c820756d5103914f329704ed0c9d8f4f61fcd4aa69923c0bf381f808302267f
font_01_sfnt_off0000f9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C7 18432 bytes
SHA-256: 7abb776bbd43791ee80ab7d97786914a7c0432c3dfe38587fa14c60bf7da2336
font_02_sfnt_off00012976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12976 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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