Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea0749b8fc1a167…

MALICIOUS

PDF

98.9 KB Created: 2021-06-30 03:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7035145150fdfbd715cb7264febd3ace SHA-1: c61e199234e0bdc2b100625124808b1c2a19243d SHA-256: 8ea0749b8fc1a1676abb11d89f06a5f07200ab49c687d98d5a22bb317248ee88
156 Risk Score

Malware Insights

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

This PDF file contains a link farm pointing to numerous compromised WordPress sites, likely intended to lure users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically a phishing or trojan distribution campaign. The embedded URLs are the primary indicators of compromise, suggesting a multi-stage attack where the PDF serves as an initial lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://philabc.ru/uplcv?utm_term=new+malayalam+movies+online+streaming
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/dt15hbcn8cav5bfj1vjpnratq789lh1d/zitijinobesivuwiman.pdf
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e77026cc59---vililabimibolobavabol.pdf
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/906ea0e5b4e45842777b48865cf07c8a/gapilazo.pdf
    • https://bawwabatrizq.com/userfiles/file/gikot.pdf
    • http://aucoindeshalles.com/menu/file/24621929084.pdf
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/3fbcaf662af0ad7fd48ce725aac0dc2c/givurutegesixupoluneso.pdf
    • http://ankurgroups.com/userfiles/file/xifopobaxijuzekarar.pdf
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/mfklmkv8m72jjtm5omt5o00es0/95043140324.pdf
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b881f75c298---bolojavawavuwutenobedetu.pdf
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/426b8679eefd30f4f9fc7c4ee14dd124/kibinosavizegirufid.pdf
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/0idk1kuo76l14r91mlpsdmgdmg/bufenimemuruz.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075e89c65617---21389250435.pdf
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baecfc899ff---75064560189.pdf
    • http://uticachemical.com/files/upload/files/neriwagavimisa.pdf
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/6eadc2869d260102b277ea5728e1b9de/nodukumi.pdf
    • http://ge-mak.com/files/ledurijowas.pdf
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/qllhseiifsnl67pv951rvci0v7/katigovoruwaze.pdf
    • https://www.rockfallco.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc0b02812d---lasoraxemasopojufogog.pdf
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/7e07fae1b18d6001820abe9f589f82bf/96816338553.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/eb76a7b7f5e65262b8b8884b625a6c7f/badagamufibulowonowibibal.pdf
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1608016afc0a5d---35356475386.pdf
    • https://valleyrestoration.net/home/apf/public_html/ckfinder/userfiles/files/posunaremenafisalate.pdf
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606de7bc9ce28---sibexazepopiwizosopimemoj.pdf
    • 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_off00011f4b.bin
ec2804517d5bffdb65bf8a658923234a162d483b517fce9ad6929348addc9970		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F4B 17780 bytes
font_01_sfnt_off00014d67.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D67 16792 bytes
font_02_sfnt_off0001657e.bin
079775d2bf83b0c1a6f15af18ca1d53ae352ba26efcc017869d8a1742c26537d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1657E 10692 bytes

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