Malicious PDF — malware analysis report

Static analysis result for SHA-256 1baa70dcda1e82a2…

MALICIOUS

PDF

77.3 KB Created: 2021-09-16 12:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 32c4717cd79255b11ef5443792049db9 SHA-1: 5df6f8f903a5bb82898938cc091891778901fc49 SHA-256: 1baa70dcda1e82a2b077a343a682db650df15f9243ec582c5c802b02a345837a
224 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and a high ML score. The document body, though heavily obfuscated, contains embedded JavaScript, suggesting an attempt to execute malicious code. The presence of heuristics like 'SE_SECRET_RECOVERY_LURE' and numerous external URLs, many hosted on compromised or disposable domains, indicates a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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 https://coretry.ru/uplcv?utm_term=create+apk+of+installed+app PDF link annotation
    • http://bayernglobal.de/userVZ/file/pilisozedosanuje.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/98256058856.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/9s9o0vadj746smes8p0b7d6u67/8937816755.pdfIn PDF document text
    • http://xutricolor.com/uploadfile/files/jewekosetuxu.pdfIn PDF document text
    • http://hotechike.com/files/files/wexiverunisi.pdfIn PDF document text
    • http://dautuck.com/uploads/userfiles/file/tunetemi.pdfIn PDF document text
    • https://nepalonetours.com/userfiles/files/lalilavozozezapala.pdfIn PDF document text
    • http://sgrappresentanze.eu/userfiles/files/49198812048.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/finapazuvosofepanekifon.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16140b9e3e25f5---60919748736.pdfIn PDF document text
    • https://afra24.com/basefile/afra24/files/tiduvoxazoti.pdfIn PDF document text
    • https://mkycc4.com/kycc4.com/userfiles/files/sowofowekemiboda.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/57387355302.pdfIn PDF document text
    • http://gmicropilotes.com/uploads/files/85951955098.pdfIn PDF document text
    • http://finalstage.biz/js/upload/files/46207976580.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/40434744617.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136ac8670ced---87864338370.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021090105575343.pdfIn PDF document text
    • http://hastensandbreakfast.nl/userfiles/file/loruzidamudupexomifupuxuj.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/83ca2ed3c29368236e767c5eaafce903/kimalu.pdfIn PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/5406047403.pdfIn PDF document text
    • https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/96030722726.pdfIn PDF document text
    • 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_off0000cba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA1 16880 bytes
SHA-256: e65f01d02480038029e4af142b07b10fe9364b2c813fe83b5c770d5e39e9cc9a
font_01_sfnt_off0000f76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F85 10616 bytes
SHA-256: 8497ea9b0e655677ddee7ec7bf0a3d94d87eb399aacaad6cc3a50012065ae164

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