Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41fd7408915e95a…

MALICIOUS

PDF

79.5 KB Created: 2021-03-19 09:03:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd02242e01d24c43f588ae4732a37ad6 SHA-1: 20466fef5290bd46443ba72270fc1bc46e9cf603 SHA-256: f41fd7408915e95aaaa9cf60d72730f996046a953447f58a6147067316dfc12b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many of which point to other PDF documents, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/strik?utm_term=an+introduction+to+categorical+data+analysis+3rd+edition+solution
    • https://cdn.sqhk.co/xotosobupis/dhfQpaw/flat_pack_kitchen_cabinets_melbourne.pdf
    • https://cdn.sqhk.co/kavejufa/KidGGha/fofozezipamonasimobaso.pdf
    • https://cdn.sqhk.co/kivipemo/uhaPgjX/fire_alarm_testing_report_format.pdf
    • http://vurujupafowutox.mypressonline.com/carmine_gallo_ted_gibi_konu.pdf
    • https://cdn.sqhk.co/rorajakura/jdFifgi/best_android_keyboard_for_seniors.pdf
    • https://cdn.sqhk.co/lunosupi/cjjvcul/40511636337.pdf
    • http://lumejaramelu.mygamesonline.org/zozumosakubotemem.pdf
    • http://roxedizusugu.mywebcommunity.org/pharmaceutical_branding_strategies.pdf
    • https://cdn.sqhk.co/loxinesupiva/iqMibE2/grand_phones_trading_deira.pdf
    • https://cdn.sqhk.co/surofowudula/hgYeAih/wutibiw.pdf
    • http://gejurabek.getenjoyment.net/xatuwox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://43a98339-0465-49d0-a416-8cef4780896f.filesusr.com/ugd/89258f_21ae734cf4a1471daa440e36337325d5.pdf?index=true
    • https://s3.amazonaws.com/bulolimepol/fetiludaf.pdf
    • https://s3.amazonaws.com/rokuwapesu/fijilavibetamaxoxuk.pdf
    • http://sanojepenot.onlinewebshop.net/asus_maximus_viii_hero_bios_update.pdf
    • http://ziwivazud.onlinewebshop.net/soliperowu.pdf
    • http://nuwadolonopip.onlinewebshop.net/construction_company_profile_pakistan.pdf
    • https://95e354e6-8561-4e52-807b-deb85f3b5fdd.filesusr.com/ugd/ca9b0a_71c26c7f70ad4b499994bb7a5e399309.pdf?index=true
    • https://s3.amazonaws.com/najubu/xigoneserufuxo.pdf
    • http://rosevasejila.myartsonline.com/chuunibyou_demo_koi_ga_shitai_characters.pdf
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_58d6a735e52f442f9d6c548b4b5c2e08.pdf?index=true
    • https://2e81f42f-67f9-46a9-89e2-a5f3ab3b03ee.filesusr.com/ugd/f138f5_6e028622fd264a1d921774393feef23b.pdf?index=true
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_ddba8ee8a7f348e29a736b70dc8822e0.pdf?index=true
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f949.bin
8e7750d24a18b8993b005885690bc9e5005eca2cf6015ecd3a9b50b3591d6e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF949 5360 bytes
font_01_sfnt_off00010b9b.bin
3473cb881ede97128cad2718650bbc8d64959aad66194afb755facfcef224f40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9B 10728 bytes

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