Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb832d544fd7eca1…

MALICIOUS

PDF

72.9 KB Created: 2021-03-26 10:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ae0b11936511542249b7552c0b6dfd3 SHA-1: 75a98828934b77fb73f7b11789bca07a6b689a4f SHA-256: bb832d544fd7eca1cf80ef8dea073ddcb4a485fded35741e54a0d2caea3ab232
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to 'free crossword puzzle maker download for mac', suggesting a social engineering lure. The embedded URL points to a domain that is likely hosting a malicious payload, consistent with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://dafemum.ru/strik?utm_term=free+crossword+puzzle+maker+download+for+mac
    • https://static.s123-cdn-static.com/uploads/4393485/normal_5fcc2ccb683a1.pdf
    • https://cdn-cms.f-static.net/uploads/4445129/normal_5fd5f26240a5f.pdf
    • https://static.s123-cdn-static.com/uploads/4415937/normal_5ff7d6e737b4e.pdf
    • http://zukesijinizik.mywebcommunity.org/7009817066.pdf
    • https://cdn.sqhk.co/mipijotom/ggie8ji/30884219813.pdf
    • https://cdn-cms.f-static.net/uploads/4451377/normal_600cf6d3e5636.pdf
    • https://sipitajopidegol.weebly.com/uploads/1/3/1/4/131453448/ziremurebo_bafefek_gufakawazab_zefik.pdf
    • https://lewugudufe.weebly.com/uploads/1/3/4/6/134668986/vapito-dikapubom-wixuxomekiw.pdf
    • http://lemovifi.iblogger.org/pitusaluferurorejixezon.pdf
    • https://cdn.sqhk.co/zumufapofow/orjdsjc/wedding_cake_decorations_purple.pdf
    • https://cdn-cms.f-static.net/uploads/4471082/normal_602b410d98187.pdf
    • https://cdn.sqhk.co/zepipawetopi/ckhdXie/download_mod_game_rally_racer_dirt.pdf
    • http://nuwetiveguvo.mypressonline.com/ukulele_chord_progression_chart.pdf
    • https://rowigoto.weebly.com/uploads/1/3/0/8/130813427/24efe0be800b.pdf
    • http://rojipaju.iblogger.org/why_is_in_cold_blood_a_banned_book.pdf
    • https://meletiwupidime.weebly.com/uploads/1/3/5/3/135313264/buzademizo-vubojosubava-sodomodiw-lumesuzifof.pdf
    • http://luxumegagixusa.22web.org/apparel_mockup_psd_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://losaxoxajav.epizy.com/kerala_psc_lab_technician_questions_answers.pdf
    • https://8ee4d174-735f-4cd7-9396-c3a65dbcc337.filesusr.com/ugd/5ac313_29fa8c6e86224aec88fa7e4b8e675f76.pdf?index=true
    • http://tebuwawezizafes.onlinewebshop.net/mass_production_of_metarhizium_anisopliae.pdf
    • https://ebcfae26-b4e4-4f1a-a5b2-c5bdbddc1bdf.filesusr.com/ugd/259f90_bd09c135400345a7aa9f4e8b8f717405.pdf?index=true
    • https://87deab66-c645-46c6-955a-dbc2758d34a6.filesusr.com/ugd/302fc9_82baecf312ff4e0e9e213bdad9c34a0b.pdf?index=true
    • http://nujilexulajuwup.atwebpages.com/basic_guitar_chords_lesson.pdf
    • http://lugenizuridaj.atwebpages.com/geological_map_interpretation.pdf
    • https://5b3500e9-40b4-440a-9ada-171ed8bcf4c9.filesusr.com/ugd/7820d0_9f18ee9fd76d42b0bbcc5df1126145b7.pdf?index=true
    • https://2f8a6ab9-e864-4757-b083-6627a13f4c48.filesusr.com/ugd/405339_065606c1c62b4d489e065e773e3a8619.pdf?index=true
    • http://bufalirafuma.epizy.com/how_do_you_alphabetize_excel_spreadsheets.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_off0000df1c.bin
58c4e785a25198ccad9cea303776075e78eed8184169617c92b26bf8a7b7ea23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1C 5464 bytes
font_01_sfnt_off0000f1bd.bin
a5c70a3a35f2d9e3fd83585573b9bd91dcf244860ba71bbe960822a03df56ae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BD 10496 bytes

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