Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde23ff368152ebd…

MALICIOUS

PDF

82.7 KB Created: 2021-02-26 06:44:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24430d4c8a9fc7867f58abe6c1cceb9a SHA-1: 0390fa30d82e19ea9daed504141907078f2f80cf SHA-256: dde23ff368152ebdc6c68fe1e023121120bd938964280c32660b9c57e80654b1
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a search query, likely a lure to disguise malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious content, possibly a phishing page or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/wb?keyword=how%20to%20train%20your%20dragon%20zodiac%20signs
    • https://cdn.sqhk.co/buvovemif/Tzgfyhb/rubber_bullet_manufacturers_usa.pdf
    • http://tepugorotewole.medianewsonline.com/19410238594.pdf
    • http://ketotreno.buzz/zevatapuzec7gnv.pdf
    • https://cdn.sqhk.co/pixafosabow/idicHhd/overly_neurotic_synonym.pdf
    • https://cdn.sqhk.co/bupusudiva/iigxnib/kingdom_builders_worship_center_pompano.pdf
    • http://fanisore.sportsontheweb.net/66898773915.pdf
    • http://jijukilodo.iblogger.org/bouncing_checks_law_philippines.pdf
    • http://davupopebuwiser.sportsontheweb.net/karexaloxomazejaso.pdf
    • http://teasmall.space/29343299446bbp08.pdf
    • https://cdn.sqhk.co/suvezadamut/98thTjf/snapple_elements_drink.pdf
    • http://fruits-summer.fun/48662720267zakj.pdf
    • https://cdn.sqhk.co/wubofuse/fosidjd/car_and_bike_racing_game_download_for_pc.pdf
    • http://tobufupevujuma.mygamesonline.org/bumafor.pdf
    • https://cdn.sqhk.co/kewukapugino/f7W4gfr/warriors_orochi_3_characters_unlock_list.pdf
    • https://cdn.sqhk.co/bisuligiga/jKARrhf/plants_vs_zombies_download_full_version_free_android.pdf
    • http://vodabutopidaru.getenjoyment.net/best_indian_romantic_novels_2020.pdf
    • http://puvepum.getenjoyment.net/50485385378.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zotubune.myartsonline.com/the_monkey_king_movie_2019.pdf
    • http://xojazexodiwosi.epizy.com/tomoxizel.pdf
    • http://zijiwaras.onlinewebshop.net/nigijavifizerozewedix.pdf
    • http://sebipukavore.epizy.com/cash_flow_statement_notes.pdf
    • http://vivizegijarugip.epizy.com/aambala_songs_starmusiq.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecdc.bin
d13ebb2d8266738317b191a6502134428765ad4c56f20b81b42626d34aa564dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECDC 5044 bytes
font_01_sfnt_off0000fe18.bin
3e6c323c9e67c04efddc5e9d761c360b2a452c22c2c4ae0ae2381f21a2f52bda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE18 2344 bytes
font_02_sfnt_off00010881.bin
a44aa648b430811fb5157ea24d98da0be2ce01b867b122107cbd5108345cb55f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10881 11108 bytes
font_03_sfnt_off00012e52.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E52 4324 bytes

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