Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0586ff4f4383ea0…

MALICIOUS

PDF

75.2 KB Created: 2021-03-02 18:33:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: cddc9be54881262ff8db36311dabff37 SHA-1: e098d28ad392fdca6c395828c0e1f21949482ca8 SHA-256: f0586ff4f4383ea084ecc0460e78349c26a1561460c47628b3b70653cf292180
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search result, likely intended to trick the user into clicking it. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=derby+city+classic+2020+photos PDF link annotation
    • http://pokemonrivals.online/466548878348pll3.pdfIn PDF document text
    • https://cdn.sqhk.co/pesenexur/aiNHiaq/amazing_world_of_gumball_games_dino_donkey_dash.pdfIn PDF document text
    • http://denizan.com/boat_parking_3d2s70u.pdfIn PDF document text
    • http://finonit.mypressonline.com/who_has_a_dapple_grey_mare_patronus_in_harry_potter.pdfIn PDF document text
    • https://cdn.sqhk.co/losiluja/iichdig/59973398027.pdfIn PDF document text
    • http://barbanapoli.moscow/89638126838qigoo.pdfIn PDF document text
    • https://cdn.sqhk.co/furafurume/7IxWqeG/pac_st_catharines_box_office_hours.pdfIn PDF document text
    • http://babysampler.com/78936606050pehi1.pdfIn PDF document text
    • http://didazema.mypressonline.com/mukap.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/beko_hbs_7600w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/oil_change_ariens_deluxe_28_sho.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/7092429263.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/kajufini.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/17377710289.pdfIn PDF document text
    • http://zoguwazor.epizy.com/dedegigizadimesafita.pdfIn PDF document text
    • http://metepukiwameme.epizy.com/rainbow_vacuum_repair_winston_salem_nc.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93B 5536 bytes
SHA-256: 625fb451042cddfb94977090adfc83ec75b9db7a87b2c8740d13186063401125
font_01_sfnt_off0000fc0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0F 10476 bytes
SHA-256: 99d5b221223c68919859b5aebcae1ef344a1e4dd4c45c56acb6d51efcbe94165

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