Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19b6ed17db94283…

MALICIOUS

PDF

83.5 KB Created: 2021-02-21 03:39:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5a428b4ca89eac58da3387c7c3f29c24 SHA-1: 05c17dde62581834e570f2c3610e01d64ad3dd02 SHA-256: b19b6ed17db94283ffefb847ed452a5cc225bddaf02e4c51113dd0891b2869d4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that mimics a search result, aiming to trick the user into visiting a malicious domain. The presence of PDF-specific heuristics and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jottigo.ru/123?utm_term=is+gerald%2527s+game+based+on+a+real+story PDF link annotation
    • http://skout.tech/modul_akuntansi_keuangan_menengah86rzy.pdfIn PDF document text
    • http://kozevoviwepok.iblogger.org/xunin.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/8UAjdYd/nadizixiji.pdfIn PDF document text
    • https://cdn.sqhk.co/bafesugoguwi/hbgfhbG/ironmaster_dumbbells_price.pdfIn PDF document text
    • http://gufolosolikivu.22web.org/an_apology_for_poetry_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/CYxiiFo/panda_pop_cheats_1421.pdfIn PDF document text
    • http://storedubai.shop/gesuwaxigego240hl.pdfIn PDF document text
    • http://luvatok.66ghz.com/chomerics_1298_datasheet.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/cjibeiZ/town_farm_truck.pdfIn PDF document text
    • http://liketime.online/kota_the_friend_foto_full_albumn14d0.pdfIn PDF document text
    • http://remontlegko.info/zebosoxusalezevugab08bcy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buzawasilugije.epizy.com/derupobesubom.pdfIn PDF document text
    • http://siwapog.epizy.com/reported_speech_upper_intermediate_level_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/amma_audio_songs_in_telugu.pdfIn PDF document text
    • http://lelobuz.rf.gd/71039714869.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/53591006310.pdfIn PDF document text
    • http://gikuzeviseg.rf.gd/baumatic_oven_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/fox_tv_guide_chicago.pdfIn PDF document text
    • http://vazavaxajude.rf.gd/the_central_park_five_book.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/kill_kills_fish.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/warcraft_3_reforged_classic_free_download.pdfIn PDF document text
    • http://veziledijiv.rf.gd/tatewije.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/sex_and_the_city_2008_ending.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10846 5360 bytes
SHA-256: 8361cbe66926d1cf546b5ec24ab2cdac5010bda70de91750ce1016ea1a46ed9e
font_01_sfnt_off00011a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A73 11148 bytes
SHA-256: bafec686f26f05b955da7192310e6c09b73ab5ffda68fecac817168a121b948d

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