Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bc1ecc2db7effbe…

MALICIOUS

PDF

77.5 KB Created: 2021-03-16 11:07:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23454fed017f5157e5245cd4e91aba04 SHA-1: 514b49d0701e9b4068d45e526123dbe4ca2901ac SHA-256: 6bc1ecc2db7effbe546aed0a746b2c81ce4ee7b4b2826477a0c68b312572cb29
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/wix?keyword=kc%2527s+driving+school+watertown
    • http://lipexifinidoda.scienceontheweb.net/billie_s_bounce_lead_sheet.pdf
    • http://pojebanidik.mywebcommunity.org/modern_calligraphy_guide_sheets.pdf
    • http://latencfsrt.space/322674413614a0nj.pdf
    • http://paxosij.mygamesonline.org/can_collagen_improve_skin.pdf
    • http://erogan24.website/72323059596cysoq.pdf
    • http://callipakk2.site/gta_san_andreas_karakter_deitirmemz07o.pdf
    • http://13millions.store/can_you_run_arduino_on_chromebookp85cs.pdf
    • https://cdn.sqhk.co/tagodepa/gighg1m/magdalene_sisters_movie_streaming.pdf
    • http://pesale.pro/kifapo2g4ae.pdf
    • http://dokakepitizix.medianewsonline.com/15094048902.pdf
    • http://kuvenumine.mygamesonline.org/amazon_aptitude_questions_and_answers_with_explanation.pdf
    • https://cdn.sqhk.co/xudekutof/hjidzje/best_open_world_survival_crafting_games.pdf
    • http://azakalaza3.xyz/cv_template_filetype_docxgxvul.pdf
    • http://josumewemuzob.getenjoyment.net/who_are_famous_magicians.pdf
    • http://fakexexu.sportsontheweb.net/asus_router_rt-n56u_access_point.pdf
    • https://cdn.sqhk.co/nilesatu/Jje3hf8/plague_inc_fungus_walkthrough_brutal.pdf
    • http://kulotufiw.mypressonline.com/pathophysiology_textbook_free_download.pdf
    • http://eu-study.ru/4889809568407w1j.pdf
    • http://levantegroup.net/tavudazalzi54.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rolubumemetujin.atwebpages.com/japekos.pdf
    • http://fadezanunadafik.myartsonline.com/how_to_find_full_postal_zip_code.pdf
    • http://watusatuvor.myartsonline.com/wosafeb.pdf
    • http://gefuwaw.atwebpages.com/bakolotedi.pdf
    • http://xukokumo.myartsonline.com/bhagavad_gita_complete_book_in_english.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_off0000efb5.bin
9e4054d7578fd1d28a204ea977320b479fbb23594c8f44aa19f946532c18f120		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB5 5356 bytes
font_01_sfnt_off00010208.bin
bb3420d3951ad2aa71c49433305f1fc77dff4273b89a624e22047895551cb37c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10208 11660 bytes

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