Malicious PDF — malware analysis report

Static analysis result for SHA-256 95dea77848305fb3…

MALICIOUS

PDF

74.8 KB Created: 2021-02-22 17:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eb7953766574e89a0e2506fd3f14ae4c SHA-1: 9b5155625d9456ee7547dc425d8cd34b7666e2c7 SHA-256: 95dea77848305fb3c8fb43740dbea01b158532219c991133798d439af7672aee
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=using+commas+with+adjectives+worksheets In PDF document text
    • https://cdn.sqhk.co/jafetegupam/iaIkidf/sputnik_1957_kragujevac.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/DggNZPK/grandpa_daycare_movie_cast.pdfIn PDF document text
    • http://portkamesto.site/daewoo_eco_microwave_manualcepzu.pdfIn PDF document text
    • http://reduslim-shop.website/what_happens_in_the_original_hansel_and_gretel_story27sqe.pdfIn PDF document text
    • http://1offpark.xyz/7148084522433uig.pdfIn PDF document text
    • http://verifiedbadges-form.com/supernatural_cast_season_15_episode_6tg27a.pdfIn PDF document text
    • http://salonvarna.com/examen_de_primero_de_primaria_tercer_bloquefjber.pdfIn PDF document text
    • https://cdn.sqhk.co/rogudokives/FcxAhhL/varatonafemebufunuzunofu.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
    • https://s3.amazonaws.com/wejuvono/53026690419.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/ashta_chamma_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/backyard_wrestling_game_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/android_21_java_version.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/62783624129.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/identifying_angles_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/hot_rod_flames_template.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_off0000dae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE8 5392 bytes
SHA-256: fdb23d9e1aa9eaca2099d6d2103a5b209d245d4bb831340f241a25a14d373d2f
font_01_sfnt_off0000ed1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1D 10048 bytes
SHA-256: 30a3e19f7cdcf3c683023b47ee534f750634108b3cd2a544fba6914b6b22cec6
font_02_sfnt_off00010fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA0 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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