Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c99e271f7088dca…

MALICIOUS

PDF

78.9 KB Created: 2021-03-02 17:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 59811c0b2d1ad2568d5121cc88d7dc9b SHA-1: b0772be1ef17db994385aa0ecddd345d625ad1fd SHA-256: 7c99e271f7088dcafd20f9283f6f3154780fad1e345517b67d297c3248dbac27
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to 'The taming of the shrew katherine character analysis', likely a pretext to encourage clicking the malicious link.

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://kuzutuzo.ru/strik?utm_term=the+taming+of+the+shrew+katherine+character+analysis PDF link annotation
    • http://fudoviwil.mywebcommunity.org/childhoods_end_1996_full_movie_download.pdfIn PDF document text
    • http://lagutobokoza.22web.org/brain_food_book.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/xapolixu.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/towelojopunaxoxupiwi.pdfIn PDF document text
    • http://nejugikolivakam.iblogger.org/21120884985.pdfIn PDF document text
    • http://kokoponabile.iblogger.org/harry_potter_neuer_film_2021_trailer.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/41446706862.pdfIn PDF document text
    • http://nowofuguvinidaw.iblogger.org/accidentally_in_love_chinese_drama_ost.pdfIn PDF document text
    • http://jifixadilo.22web.org/how_much_oil_troy_bilt_storm_2410.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/77455405420.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fugufaza.myartsonline.com/ingersoll_rand_ssr_ep_150_air_compressor.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/bose_soundbar_500_manual_update.pdfIn PDF document text
    • http://jirozeb.epizy.com/gedaripekazogabiruworaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/cozy_house_sheets_discount_code.pdfIn PDF document text
    • http://tofodubigar.epizy.com/sonic_racing_allstars_transformed_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/sarah_plain_and_tall_book_read_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/sample_rescind_offer_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/34607013609.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/airtel_cheap_data_plan_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/bombay_velvet_all_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/padikemuxe.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_off0000e9cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CF 5292 bytes
SHA-256: 4fa7778b69d3f74ccbe575b5c3a66d6e754ed5a0c3ef5cbea90ff78720851e31
font_01_sfnt_off0000fbb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB7 10432 bytes
SHA-256: 15aebc5baf132add3ef1faf13ac9deb2f08fbd6183b18a15a2561ab05f7c86fc
font_02_sfnt_off00011f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F67 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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