Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70298075dfed91f…

MALICIOUS

PDF

91.3 KB Created: 2021-09-17 07:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: fda7843cb0e6a5ce298207fb095289a6 SHA-1: 97f425196164b92d16c02b5a3cebafdc632a9824 SHA-256: d70298075dfed91f9704619c73f7cf4efc128aefa567d7017270a0d89b914d6f
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a large number of external links. The presence of embedded JavaScript suggests an attempt to execute malicious code, likely for phishing or redirection to malicious sites. The numerous links, including one pointing to a disposable hosting service, reinforce the phishing or malicious redirection pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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://chcial.ru/uplcv?utm_term=brooklyn+nine+nine+season+8+online PDF link annotation
    • https://hotelgaric.com/upload/datoteke/jivujawemikuxawukabopiv.pdfIn PDF document text
    • http://bernendorf.ru/userfiles/file/sejekuzutanusaletir.pdfIn PDF document text
    • https://www.fibertech1.com/my_content/js/ckfinder/userfiles/files/51171580266.pdfIn PDF document text
    • http://air-ned.com/uploads/files/7284214434.pdfIn PDF document text
    • http://leaders-adv.net/userfiles/file/gajolaxero.pdfIn PDF document text
    • https://volandovia.it/public/fileeditor/file/71847702526.pdfIn PDF document text
    • http://gcsiva.com/files/userfiles/file/84645364515.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/40142306898.pdfIn PDF document text
    • https://mai-avto.ru/upload_files/file/vowesudowujekug.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/74005794603.pdfIn PDF document text
    • https://www.nstoplana.rs/ckfinder/userfiles/files/78536293763.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/95839475149.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1613bf2852efb2---kegizozedubesuvurarodobiv.pdfIn PDF document text
    • http://mebelhotel.ru/images/news/file/zazov.pdfIn PDF document text
    • http://nawooelcs.com/upload/userfiles/2021/09/files/210902131402.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/672e8fda9b43c68793457a95256bfba1/79413224204.pdfIn PDF document text
    • https://totalmediasolutions.ae/ckfinder/userfiles/files/24679834253.pdfIn PDF document text
    • https://eminenceconstruction.ca/viking1/uploads/files/wavusalorufaba.pdfIn PDF document text
    • https://perfectprojects.ro/userfiles/file/97641969860.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/61875601676.pdfIn PDF document text
    • https://www.speeddating.lt/speeddating/ckfinder/userfiles/files/mubijusisupatatikiwa.pdfIn PDF document text
    • http://mondoacquapiscine.com/userfiles/files/pomutukifadu.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_off0000fcb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000114cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114CC 10472 bytes
SHA-256: acb7ac871255d683d757523cc82444c770500b69afc77cd02edf79f50f9d3ced
font_02_sfnt_off00012cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CB4 19564 bytes
SHA-256: fe4fb7fb53a215e526e3fdc4aabd242c50f5392fd708c11c60a1977c6ae796d1

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