Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f8722c0c0295852…

MALICIOUS

PDF

79.0 KB Created: 2021-09-02 06:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6aa82ddfc60717f902982f19f1ea734b SHA-1: 8017553c43b204c31f9674abbfff7bc1e09d50e3 SHA-256: 9f8722c0c029585250b96f566c88ef0bba4dcbc4f0d393af44d094a7dd68b9f9
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised CMS upload storage, indicating a link farm designed to redirect users to malicious content. The presence of these links suggests an attempt to distribute phishing content or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/76d55be3f831b228ef02a1d2f3c6b573/disarotixajalajewiropeko.pdf In PDF document text
    • http://orsini-blasioli.it/userfiles/files/42084224092.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc200d93487---xabaxuxefejekikarer.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080cf025e4bd---jenuza.pdfIn PDF document text
    • https://fond.ru/userfiles/file/zolajimakoxasat.pdfIn PDF document text
    • https://study-abroad-travel.com/ckfinder/userfiles/file/13826598144.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16082aa2e52eea---15630478602.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/3433b1872dc522fba9c2bccd8aa9fb3b/tezazatirolinebevolesa.pdfIn PDF document text
    • http://sentezetutmerkezi.com/upload/ckfinder/files/lonuluxaxunuvole.pdfIn PDF document text
    • http://boilerservis.ru/uploads/files/warafasixarezijix.pdfIn PDF document text
    • http://peterpan1996.it/userfiles/files/27672223606.pdfIn PDF document text
    • https://baongochoa.com/upload/file/64753366287.pdfIn PDF document text
    • http://elskenecologie.nl/files/kotubivazumavam.pdfIn PDF document text
    • http://voijin.com/userfiles/files/sonibemanoxonukosisarujom.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/razajago.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb5cddee47---83989701045.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc814271cc---sesixubajamideri.pdfIn PDF document text
    • https://avela.md/userfiles/file/jagamosomobapede.pdfIn PDF document text
    • https://thisissati.com/userfiles/files/73473689827.pdfIn PDF document text
    • https://sealordhotels.com/ckfinder/userfiles/files/bopomatewe.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/22839881291.pdfIn PDF document text
    • http://deltools.com/userfiles/file/doxinenuletos.pdfIn PDF document text
    • http://rfinshaat.az/userfiles/file/nomopulita.pdfIn PDF document text
    • http://chineseclothingonline.net/File/dosamiboxenowubupubed.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=causes+of+deforestation+on+hill+slopePDF 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_off0000d0d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D9 16952 bytes
SHA-256: 8f5175d7313c418f6050902a84e974d7f890483e5405b21cc89a570332b2f771
font_01_sfnt_off0000fcab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAB 10724 bytes
SHA-256: 942da8e018a893eab4607405eb31f72f4399637b369f589b85658bbbe47ccf6f
font_02_sfnt_off00011536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11536 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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