Malicious PDF — malware analysis report

Static analysis result for SHA-256 be8a3971c42283a1…

MALICIOUS

PDF

87.4 KB Created: 2021-06-26 00:52:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cce22d73df8fd9301b87101c00dbf8ac SHA-1: 7e73423e79f2f5982b1c732489153475d6b2159d SHA-256: be8a3971c42283a1ddc68b55568f4c99eed4e9085ff00f075288fcea678af7db
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links, many pointing to compromised CMS upload directories and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://alexlunacoach.com/img/editor/file/57555334531.pdf
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c037638e145---16107468944.pdf
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d989ce8e48---25043120634.pdf
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160afb4dcc6fc5---bopezexorifagimunorasas.pdf
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/ca6b27444fa6f5e391e3a606373b2342/fepepijej.pdf
    • http://canxetaidientu.com/images/file/33288911448.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8afcdd2c9---vurizagerigunis.pdf
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/rajbpopl9b2eea56ccvoa00r64/16378880511.pdf
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/8urk9nsjga7q5p71udofict740/21846515310.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1609a11e6a766f---jutomesumijasimovenatinu.pdf
    • http://akicgiyim.com/userfiles/file/pugenudiwi.pdf
    • http://www.proyecpapel.es/ckfinder/userfiles/files/30900480328.pdf
    • http://wildpflanzen-planung.de/file/96454218994.pdf
    • https://planet-for-events.de/userfiles/file/61804114666.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/0fe7193f1a24fa17b3c488fa0759e4f7/76359301354.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a369e223806---pedodopativajerit.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d074e5d309---ninejafowumogelujazubu.pdf
    • http://akinmedikal.com/uploads/file/31696128819.pdf
    • http://carsongrad75.com/clients/3/35/35717660c32d3dd9b0ffde8f33a19d23/File/16485311478.pdf
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086ba89db5c7---tegeridiwinula.pdf
    • https://www.myosiaffiliate.com/199trust/img/file/kiwixo.pdf
    • http://gtlmarinefuel.com/userfiles/file/54514822630.pdf
    • https://daaeportrett.no/upload/file/49348190058.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4a7f618e5---2296397562.pdf
    • http://logistra.fr/ressource/site-image/files/kimegejobi.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/aam918uhe5pp2fhgfvtfrc9cv7/kajumapekulakogodogew.pdf
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160caaace82df2---87725086908.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=meaning+of+cowardice+in+english
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f069.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF069 16792 bytes
font_01_sfnt_off00010880.bin
2c4178f40564cbdae9ccb09538f515d6e3338311a5c177571fd26c4bbaf28339		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10880 10736 bytes
font_02_sfnt_off000120eb.bin
a80147ec04cb65710e2a0a647d753c4b0349d5197033d2548f28c10894d052dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120EB 18228 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.