Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6281430a4b5858…

MALICIOUS

PDF

81.1 KB Created: 2021-09-08 18:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: a04f224297c5e8a7f5e1b475d52f1667 SHA-1: 808794242e5ab8b63200632b4b2f75d8d09fec4b SHA-256: ce6281430a4b585896a47d594244aba30aab5b00c633aa4e4ab3573eb37a34dc
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.channeloflove.com/ckfinder/userfiles/files/palamuw.pdf In PDF document text
    • http://www.bufolari.com/public/immagini/file/xumidana.pdfIn PDF document text
    • https://coil.hk/upload/files/wurekesikel.pdfIn PDF document text
    • https://maribon.net/app/webroot/files/userfiles/files/luzogamuzaduxusabezalet.pdfIn PDF document text
    • https://shoppe.everybodyisnotdoingit.org/gift/userfiles/files/4906587051.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/nuxaxowobape.pdfIn PDF document text
    • http://gddfboiler.com/uploads/files/binuri.pdfIn PDF document text
    • https://hotnews.md/upload/userfiles/files/suteziwokolavodebu.pdfIn PDF document text
    • https://photojet.bg/userfiles/file/tomarabobemeselavewapel.pdfIn PDF document text
    • http://alisawedding.com/upload/users/files/virunapilelokedokiz.pdfIn PDF document text
    • https://rajatotogroup1.com/contents/files/rixigok.pdfIn PDF document text
    • http://www.kroonzuivel.nl/ckfinder/userfiles/files/42960824530.pdfIn PDF document text
    • http://suaups.net/userfiles/file/zosevap.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/nizuvibetomawurepobared.pdfIn PDF document text
    • http://swatimishra.in/uploaded_files/userfiles/files/bimedodonosovaxibofara.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/a3d2e40ddd8492b924ceedf585beedbb/rakixibupetes.pdfIn PDF document text
    • http://fotocaroli.it/userfiles/files/wobin.pdfIn PDF document text
    • http://ontis.sk/editor_uploads/system/files/pubevewejipebalozub.pdfIn PDF document text
    • http://danangsculpture.com/uploads/image/files/2916370470.pdfIn PDF document text
    • https://pasarantogel.com/contents/files/38796852534.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/161374d0221664---98928459069.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=biographie+jean+jacques+rousseau+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

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_off0000d48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA1 11184 bytes
SHA-256: 70c0d1ec0e846bb1a53c64136d873bbd9e8e5981958ced8ca5303a7fe0d88677
font_02_sfnt_off0001062c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062C 19416 bytes
SHA-256: 1327bdbe6a039f508034ad0a1d453691753f8c0a7837f5d1402bcde76977a132

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