Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3b53ccf178b7de…

MALICIOUS

PDF

73.3 KB Created: 2021-02-26 04:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 738572be86e1eb14dd03da3c696f6fdd SHA-1: 8aefe2d3f01be3f81b778bf5232ded31b4033f16 SHA-256: 2c3b53ccf178b7de7cc03576dc785f903760462cd4b0842ee24d9bf0a65ec600
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a suspicious domain, likely serving as a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/strik?utm_term=where+is+the+nearest+fedex+shipping+store PDF link annotation
    • https://cdn.sqhk.co/naziwixolagu/jjasgdp/dazogemifijogi.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/igja7PE/my_hero_academia_theme_song_piano_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/hiiigju/87065466463.pdfIn PDF document text
    • https://cdn.sqhk.co/tedogegez/hcgficT/1116758192.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/Glgg6cd/72307413958.pdfIn PDF document text
    • http://my-favshoph.online/jacey_duprie_gift_guidekdpnd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370071/normal_5fdd2626bf4a8.pdfIn PDF document text
    • https://cdn.sqhk.co/lexebogefaj/thi07ge/cat_jump_starter_cj3000_battery_replacement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_602070daa3000.pdfIn PDF document text
    • http://smcjd.com/swann_dvr8-4580v_factory_resetoufbg.pdfIn PDF document text
    • https://cdn.sqhk.co/vokalater/gxjhFjh/airport_city_hack_ios.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/dezigiwiiggea.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/Vjjgcs1/android_mobile_latest_ringtones_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tokofape/ejihfLy/51198065326.pdfIn PDF document text
    • https://cdn.sqhk.co/gasubapo/mbicqjj/12537310004.pdfIn PDF document text
    • https://cdn.sqhk.co/vumulevezuf/ihajhQK/packers_tv_schedule_today.pdfIn PDF document text
    • https://cdn.sqhk.co/riroxale/Chihd20/tiktok_songs_mashup_clean_30_minutes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dubobosijube.rf.gd/lekerutulabubefixepa.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_off0000e11c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11C 5352 bytes
SHA-256: 1330b1749465a12fcb43a880ff0fbc699276d0441cae65c3da2b5965a36d7265
font_01_sfnt_off0000f362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF362 10648 bytes
SHA-256: 5fb723f6661a6250793a020ed153081396966650f0cfc9fcc9f4fff24674fbae

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