Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4212889d347439…

MALICIOUS

PDF

77.9 KB Created: 2021-04-30 22:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92c522226b5b1927235d06978252733b SHA-1: 22ea2b9be416202f47e6db1a5670d9b0045f4cc4 SHA-256: 5b4212889d3474391400260859c6947641be118eedf10adfe0cbefb6b1fbdb6f
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to host a secondary payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to 'physical appearance'. No scripts were extracted, but the PDF structure and embedded URI heuristic indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/strik?utm_term=physical+appearance+is+important+nowadays
    • http://vidoroxujo.22web.org/xesar.pdf
    • http://soluzixod.66ghz.com/54081588047.pdf
    • https://cdn.sqhk.co/tevimuwijile/VM4idk3/fotagusemowipolulumexi.pdf
    • https://cdn.sqhk.co/jimatoju/fxideLU/koduvemubixovubasix.pdf
    • https://cdn.sqhk.co/jopogoxom/puEhigi/agents_of_shield_episode_guide_season_1.pdf
    • https://cdn.sqhk.co/zerurukoraju/ia6jdiB/99593448144.pdf
    • https://cdn.sqhk.co/rabataxuvax/X3gehgj/toca_boca_hair_salon_2_game_play_online.pdf
    • http://wonamesavap.iblogger.org/stock_certificate_template_free.pdf
    • https://cdn.sqhk.co/goganededem/cqlrggs/zijivopatojawetitejapef.pdf
    • https://cdn.sqhk.co/baxoladipezu/Zgjijhc/34857328999.pdf
    • https://cdn.sqhk.co/kivipemo/Coljfza/20686375296.pdf
    • https://cdn.sqhk.co/barosevarega/kieDGih/36089732893.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://baxutuzimux.epizy.com/35446178241.pdf
    • http://kemivitakes.rf.gd/north_carolina_secretary_of_state_annual_report.pdf
    • http://sopavame.onlinewebshop.net/inheritance_cycle_book_4_download.pdf
    • http://gakefeli.rf.gd/zulabifapipapaboruja.pdf
    • http://levuras.epizy.com/programa_arde_lucus_2020.pdf
    • http://bidajalej.onlinewebshop.net/40596999851.pdf
    • http://tijekozevapika.epizy.com/bixidorafag.pdf
    • http://ledufowi.myartsonline.com/ansi_c_7th_edition_download.pdf
    • http://radizala.epizy.com/what_jobs_can_i_get_with_a_mechanical_engineering_technology_degree.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f222.bin
f2e09a82e1f0c1122b24c8cd4fee234c08241a26ba73d75f37438d2a0b097584
pdf-font-stream PDF embedded font (sfnt) at offset 0xF222 5508 bytes
font_01_sfnt_off000104cd.bin
0c755f902c98bd826d06d3799fa768754122513256e382d6e1c922c4c6b77b4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x104CD 10860 bytes