Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed146771aedba4e…

MALICIOUS

PDF

89.3 KB Created: 2021-03-11 14:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 3372d85648f88affef1ad28e095439ed SHA-1: 1948a631302a5b5920c8bf55d42f125d5d8d6565 SHA-256: aed146771aedba4e4324926310a4b1ef8575058d0062282a22b0dcbb669da195
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://jumiwimov.ru/wix?keyword=star+wars+commander+upgrade+guide', which is likely a phishing lure. The document body is heavily obfuscated, but the presence of external URIs and the high ML score indicate malicious intent, possibly for credential harvesting or further payload delivery.

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://jumiwimov.ru/wix?keyword=star+wars+commander+upgrade+guide PDF link annotation
    • https://cdn.sqhk.co/letaziseb/agi1Xjb/mermaid_background_for_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/jfx0idv/download_youtuber_life_online_drag_racing_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/fjadW8W/nbc_sports_app_not_working.pdfIn PDF document text
    • http://salonlabs.xyz/52449827402y879y.pdfIn PDF document text
    • http://gubixazolela.sportsontheweb.net/30414620557.pdfIn PDF document text
    • http://bionatur.space/sunazefopaxesenomagidup0zrt.pdfIn PDF document text
    • https://cdn.sqhk.co/fiseguvugele/ejaT8gh/59530479287.pdfIn PDF document text
    • http://tetiviguxawik.getenjoyment.net/4264881379.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/gihaUgg/24042402350.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/rC6Nnhi/custom_leather_pants_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/Ohgjjgg/business_courses_at_king_s_college_london.pdfIn PDF document text
    • https://cdn.sqhk.co/xekobigi/jdbjdgf/jspdf_table_example_jsfiddle.pdfIn PDF document text
    • https://cdn.sqhk.co/zerumowo/hdgdRih/27873989747.pdfIn PDF document text
    • https://cdn.sqhk.co/sofawaju/FghEatP/church_shift_sunday_adelaja.pdfIn PDF document text
    • https://cdn.sqhk.co/balekunu/ha0FvoH/jumpstart_kindergarten_2002.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/viregujipowuru/boss_tu_2_buffer.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/weather_report_band_t_shirt.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/teleperformance_montego_bay_online_application.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/chronicles_of_narnia_full_movie_online_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/adverb_clause_book.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/the_heirs_episodes_recap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE626 17892 bytes
SHA-256: 0c55023938bbb92dbe3612986f7b7b8a76617ee2a7a85fb85b4d058caae10243
font_01_sfnt_off00011e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E04 5556 bytes
SHA-256: 6da3c71ef38819b1bca66fccf45cded0028cbe27f124679a0f7721e4c5f3b42b
font_02_sfnt_off000130eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130EB 11004 bytes
SHA-256: 2ea2f31c62babacd91cbf243a6dee788030921f07ecf3919081bf69dba9b8e53

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