Malicious PDF — malware analysis report

Static analysis result for SHA-256 074c6390c62f7b68…

MALICIOUS

PDF

83.1 KB Created: 2021-03-24 02:37:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ebdc18e68b377fe6fce1bc2b1b1c725a SHA-1: 29b2aa31ddfb38cae8fda7a72b61977b38c1761a SHA-256: 074c6390c62f7b68a8f9e9b03bc773eb8f4fe1f3c2b326692009a050c4b008c9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs points to a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=segment+addition+postulate+practice+pdf PDF link annotation
    • http://jelojutu.sportsontheweb.net/advertising_definition_marketing.pdfIn PDF document text
    • https://lososegumupabi.weebly.com/uploads/1/3/1/4/131407698/ramab-rowebelevojus-detodisafevazar.pdfIn PDF document text
    • https://cdn.sqhk.co/lewikokezina/jptboii/dopudabisetagugexa.pdfIn PDF document text
    • http://pubofumoxo.scienceontheweb.net/49145723924.pdfIn PDF document text
    • http://keniworu.mywebcommunity.org/tonoxeb.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/how_to_clean_the_filter_on_a_samsung_washer_dryer.pdfIn PDF document text
    • http://nitiwomifigurod.mygamesonline.org/gebozebalif.pdfIn PDF document text
    • http://kodavuviguwu.mypressonline.com/materiales_metalicos_ferrosos.pdfIn PDF document text
    • https://pumujeguda.weebly.com/uploads/1/3/5/3/135330988/samowus.pdfIn PDF document text
    • http://xokebidukefu.getenjoyment.net/fidusup.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/ZSUQ2jd/zombie_city_survival_mod_apk_free_download.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/the_crown_season_3_episode_8_wikipedia.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/jfRagfB/father_and_son_cat_stevens_songtext.pdfIn PDF document text
    • http://farotosinotom.mywebcommunity.org/7565769168.pdfIn PDF document text
    • https://cdn.sqhk.co/bamewimoxatu/jhhYMja/2020_movies_comedy_netflix.pdfIn PDF document text
    • http://nonowun.mywebcommunity.org/how_to_remove_a_cystic_pimple.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/hhzid2l/64724155647.pdfIn PDF document text
    • https://mivixotagu.weebly.com/uploads/1/3/1/3/131384173/kebenunovofalen.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/tinezedu/accretionary_lapilli_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/vector_addition_lab_report_conclusion.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/92517174027.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/how_much_do_chick_fil_a_employees_make_in_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/comune_campoformido_ufficio_tributi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF26 5580 bytes
SHA-256: 2e0e53f1a1720fafd23d162f6e8279a6b20eec0b940f3e908f9171d2c2790fb5
font_01_sfnt_off00010207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10207 11684 bytes
SHA-256: 1f080e0852a7d278b4f10d9abb5026526f3983b39d13968e51cacfbcfb75d7ed
font_02_sfnt_off00012a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A46 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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