Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a02c72153e1120…

MALICIOUS

PDF

86.7 KB Created: 2021-09-01 23:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d340ba45ed4032abe18e1babb5864c95 SHA-1: 43bcbf5bae659c62647a90037671e8099c5b9825 SHA-256: 96a02c72153e1120a8b22075afeac89b442fd5b5824a6e82a7ead5eb5f29ad4c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs that point to various websites, many of which are associated with compromised content or act as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://drafthe.ru/uplcv?utm_term=orthostatic+hypotension+measurement PDF link annotation
    • http://alituncer.com/userfiles/file/27781470727.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/gijebadonivukatasameneg.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/45323889900.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/647e12598525902d33a8619046fd9718/18203264708.pdfIn PDF document text
    • https://mygo.com/ckfinder/userfiles/files/makoxo.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/46440375288.pdfIn PDF document text
    • https://rasathantrananotech.com/ckfinder/userfiles/files/75401812032.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/df2aa68ba47234bed25a54e75439f6dc/62935685566.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/0eifjb96etb8f5bh0b1f004rt8/nepopafuzasituliwesoduxo.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/60h7qcvv1o36v2pt2p3iqcajq4/96794534299.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c01fb92afcd---xuwoki.pdfIn PDF document text
    • http://ahdjcm.com/upload/files/48152526960.pdfIn PDF document text
    • https://sanvexe.vn/webroot/img/files/numaba.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/86225905039.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c90f9dc030e---59638043387.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/67685739719.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/82141243531.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/zumusupipupax.pdfIn PDF document text
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/92807836046.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/4m051u9rfh76qpopuh8ukh5o74/54915693821.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/b8a4eee94e976b07426de79b3fec725c/31716724000.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/035f61ac66fc232d4e046d5425090457/kuzawokenozofo.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/a88ec5d26c0842c6a644320d96134ed8/luvafupoz.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b05043b1a---pifepitubi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 10832 bytes
SHA-256: 04687051daa588034afcd9bf8cfc2d6dee523a6bcdf560c1d1360df1dcb11720
font_01_sfnt_off0001067b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8D 17504 bytes
SHA-256: 7f7d9b3e178ee6ffb1d772f3cd91f6098b39c4b3dd906b35f9042e50b207f63a

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