Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeaf2993839c1617…

MALICIOUS

PDF

81.9 KB Created: 2021-04-14 17:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b585f78ed80de6d796816102dc143313 SHA-1: bdbf7a0d2a0c1f155c62856a6e30c1d77a14f810 SHA-256: eeaf2993839c1617c5fd74caf74f15024ad64a7971cbfa320bf26dae02b8b380
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'kuzutuzo.ru', which is likely used to host a phishing page or deliver a second-stage payload. The document body, though heavily obfuscated, appears to be a lure related to 'Shri ashta lakshmi stotram lyrics'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://kuzutuzo.ru/strik?utm_term=shri+ashta+lakshmi+stotram+lyrics
    • http://jiteruruw.sportsontheweb.net/aminocidos_essenciais.pdf
    • http://rinevagisovagi.22web.org/45193116580.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • http://alcexpress1.xyz/abrsm_guitar_syllabusi2ybr.pdf
    • http://putifid.iblogger.org/greek_goddesses_names_list.pdf
    • http://circulshtangcalip.website/trading_strategies_for_penny_stocksdvubx.pdf
    • https://cdn.sqhk.co/kexofodatop/ghyjgii/88848930785.pdf
    • http://xadazobisisim.scienceontheweb.net/astronomy_magazine_february_2020.pdf
    • https://cdn.sqhk.co/jezuleku/ojjha2N/moxanaboxaxoradonelopofij.pdf
    • http://muldwych.com/71086765245nzmwf.pdf
    • http://volupixo.mygamesonline.org/enlace_puente_de_hidrogeno.pdf
    • http://sokinabunerir.iblogger.org/momepukunafafida.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://uploads.strikinglycdn.com/files/7c5b88f6-9de3-47e4-8003-c3e84d33316d/sovimefevolenixage.pdf
    • https://uploads.strikinglycdn.com/files/78100176-2bb2-4c8e-ad19-5dc0e12cc202/vidakabon.pdf
    • https://uploads.strikinglycdn.com/files/55524a22-6c59-444f-9c4f-3ceb844f07f3/does_cashing_a_check_show_up_on_statement.pdf
    • https://uploads.strikinglycdn.com/files/0991a1be-60fe-4909-b85c-43aec1c33090/danby_ac_window_unit_8000_btu.pdf
    • http://gajovab.epizy.com/89702061550.pdf
    • http://soranodabiwegi.myartsonline.com/graphic_design_company_portfolio.pdf
    • http://vuxazobug.rf.gd/free_download_harry_potter_audio_books_in_hindi.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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3e1.bin
32eecd0a99d2ba15b9018a0aec092a5390e20bd6d7996291b52713922f35590a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E1 5308 bytes
font_01_sfnt_off000105ca.bin
dde86ec63c103bd8ca812f20d3a8c4b99ac4c9817e9cf4ecc3bd53551214b90e
pdf-font-stream PDF embedded font (sfnt) at offset 0x105CA 12552 bytes
font_02_sfnt_off00012ce4.bin
239f62896a362cee99164294bd9c6db5c8141ff0df415fcfa347ffb0673b2d8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE4 3268 bytes