Malicious PDF — malware analysis report

Static analysis result for SHA-256 360a734f9d96ad24…

MALICIOUS

PDF

151.0 KB Created: 2021-06-28 10:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: e01aab51e1769c8132491f1ea96322a7 SHA-1: 221ecfe50b86c180d6611ff1f5d40c11e0f55cd9 SHA-256: 360a734f9d96ad247cf8444102f0223d80d8371082550e1f2eefbc5a76c8caaa
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, with numerous embedded URLs pointing to compromised websites and disposable hosting. These links likely serve to redirect users to phishing sites or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://ludifrance.fr/userfiles/file/falinusixufupoj.pdf In PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/58fd3efbc18c6ef47e5a9f63527d03ca/texakekadevivimebikizeve.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160858bafbefa0---xukevisotebixe.pdfIn PDF document text
    • https://xn--80afc2apd5n.xn--j1amh/upload/files/fufofogosigegu.pdfIn PDF document text
    • http://prunay-en-yvelines.fr/ckfinder/userfiles/files/36777258589.pdfIn PDF document text
    • http://liga-stf.ru/i/upload/files/65313843235.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16083be54c9d0b---mububasudukojenabo.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/4ful84qtes720q681kuhuj00cr/53213831388.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb7674b0254---tupapalojukejine.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160c43ea8eb4e7---57134516337.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/03hvniv2tnnib1kda6hmg4nueb/47788381168.pdfIn PDF document text
    • http://mawaevents.com/uploads/file/wapefunenupox.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091d7af0bc6b---46339300757.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16074c46059f0f---74253611331.pdfIn PDF document text
    • http://cuacuondaiphuc.vn/upload/files/dugapafijugamekoxo.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/79795835492.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef83188021---34177140680.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090cb5bb9454---78640490024.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/rutozetav.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/rukadosanomeg.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/womuguvezisagavugakefog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=theories+of+urban+growth+pdfPDF 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_off0001e1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E1FB 21476 bytes
SHA-256: e127f0cb7338331988c4bf05e088383ad3770dcee222f701dc6dbb9ca9628937
font_01_sfnt_off00021bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21BD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000233ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x233EA 11020 bytes
SHA-256: d7ee54c4549776fc094e388b4f698741a9c1c66c52d7dded65a110cdbb998369

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