Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b7e1f8222f5c990…

MALICIOUS

PDF

75.1 KB Created: 2021-09-10 09:34:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 05809100465816db18393a00fb8df011 SHA-1: 4b08ebf0cf7fd033f51c041c2f5fdf44c8547ad5 SHA-256: 4b7e1f8222f5c99047e0e66653d0ed7ae608be6706eca7348de4fb3498c37ad6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a phishing or malware distribution campaign. The file's structure and embedded links indicate it's designed to trick users into visiting malicious sites, likely as part of a spearphishing attachment attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8335

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
  • 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
  • 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://garglob.ru/uplcv?utm_term=j+krishnamurti+biography+pdf PDF link annotation
    • http://weighlessthisyear.com/ckfinder/userfiles/files/bawowejadoratomewaf.pdfIn PDF document text
    • http://shijijiaming.cn/filespath/files/20210903103005.pdfIn PDF document text
    • https://somos.co/dleyes/admin/fotos/file/69185825921.pdfIn PDF document text
    • http://receptlap.hu/files/43595720449.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613173146fac5---dabej.pdfIn PDF document text
    • http://shinaval.ru/userfiles/file/popifusesa.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138ef2e30115---22045906109.pdfIn PDF document text
    • http://giaydantuongphongkhach.net/images/news/file/1209295718.pdfIn PDF document text
    • http://shrlie.com/upload_fck/file/2021-9-7/20210907165754158397.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/5e941cf3e51add5ab36c984358ee88d2/joxefevuxuvuguwipejad.pdfIn PDF document text
    • https://clove7.com/userfiles/file/61303219490.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138649f37b46---wokulipugazinomutojilogu.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/88affaf643b098ed737fbfc70d49c8c1/danigujusavunavamazi.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/96224118545.pdfIn PDF document text
    • https://emotionalgift.com/ckfinder/userfiles/files/49838868200.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161315e18bf90d---vepigujesoni.pdfIn PDF document text
    • http://ibconsulting.it/userfiles/files/vexeberomafomumaxelaxi.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/161373ac74636e---63720337165.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/17843682504.pdfIn PDF document text
    • http://rosg.net/sa_upload/userfiles/file/20210907190847.pdfIn PDF document text
    • https://kolbandibileklik.com/resimler/files/kotez.pdfIn PDF document text
    • https://hosrem.org.vn/ckfinder/userfiles/files/13980205752.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/dc2702652b3d845dbfd16bf8511bd57d/mugaronolakevudeko.pdfIn PDF document text
    • http://elistaprezentow.pl/userfiles/file/19639217475.pdfIn PDF document text
    • https://bhavanarayanaswamy.org/userfiles/file/42820767463.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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