Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e297266ca5a6fb…

MALICIOUS

PDF

81.4 KB Created: 2021-09-04 23:11:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6f4fa652d5a32677657cbfdffad8fc14 SHA-1: 98f7f03d38efe15b3175e34bda0010ff70fe1fb2 SHA-256: 01e297266ca5a6fb36c80c11aa0364aea65798e5a6ad8a678617fe78039c02a6
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a link farm pointing to multiple disposable domains, indicating a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick users into believing they need a password to access an archive, a common tactic to bypass security filters. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://eurekaloggers1970.com/clients/a/a4/a4917853023b9a70bc4506ca58f09c65/File/11122128593.pdf In PDF document text
    • http://fsanaq.com/upload/file/210901225312683877dcfc3onwizgs.pdfIn PDF document text
    • http://forepic.com/_UploadFile/Images/file/mewezeju.pdfIn PDF document text
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/supelutopusutebufa.pdfIn PDF document text
    • http://russia-ex.com/dawapip.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c467ba399b---bijabidufolukawasuziga.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160973620c1774---mawijuze.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/mimebojav.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/06965075047090432bb8b5996a9d42a8/tenutewijusudu.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/lesoxar.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/cc2850ee98db04402ed5454759fa2d96/turewu.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082d2ffbf1d8---wojukakefemosexiwu.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2021072105540273183.pdfIn PDF document text
    • http://smflow.in/admin/uploads/file/jevafivowinal.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16082f9d5ab95b---93472534126.pdfIn PDF document text
    • https://biodez.lt/i/File/mizudoriwiva.pdfIn PDF document text
    • http://hotstamping.pl/files/file/xijobalimogafu.pdfIn PDF document text
    • https://matfreklam.com/calisma2/files/uploads/zipolegasul.pdfIn PDF document text
    • http://cmsrecuperocrediti.it/images/file/66220800749.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/c74ce3a868faf8a411b4ad493ce59e25/pogagiduz.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075df6f64e83---95762753455.pdfIn PDF document text
    • http://quimis.net/js/ckfinder/userfiles/files/firoriwirogu.pdfIn PDF document text
    • http://foxhill101.com/userimages/ramuxipafesemezikivisiri.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a80e2cea59---5116034069.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/280210152801.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=signer+un+document+pdf+sur+ipadPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EA 11092 bytes
SHA-256: 29e93ac66bd517dfcc4a0d566d2f54241b20bf1343bd5d0c99369fd5f516b421
font_01_sfnt_off0000f08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08C 19080 bytes
SHA-256: 5e842d12d3961f251cdc131dff5250cbf2a6be9ef8b6056fdd63f18165df8b91
font_02_sfnt_off00012021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12021 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1