Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a7f1db50b5e06c…

MALICIOUS

PDF

65.9 KB Created: 2020-12-01 13:04:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 98329e3dd52612be4f6940cd8bd174c6 SHA-1: dafb298d5e3844fbfa8e92e46c08574708f92b94 SHA-256: c8a7f1db50b5e06c2c317b90a7eaca34c8bd1f98275ddcd3e58f0a813c40bd43
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds external URLs that direct users to attacker-controlled resources. 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
  • 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://traffset.ru/strik?utm_term=jackson+auto+repair PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379601/normal_5f8bef96ae5ea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbfd2c30b6b03258f2f7c3b/t/5fc0db24a97599144e1731c7/1606474532853/half_life_lab_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4950eaf37e3b6491da1d/1606371664937/gibbed_borderlands_2_save_editor_weapon_tutorial.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e844cd1e280355d45049/t/5fc1c6aae18c5c478e3d76ad/1606534829322/symbolism_in_the_crucible_act_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc386dd1c8c7413144296be/t/5fc562b95147b14804e6b5e9/1606771386332/apk_fx_guru_mod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d96ebd14ff0dd29c6608/t/5fc147eebc819f1cf4075974/1606502382930/jarefimo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e727ea4a794d5645064f/t/5fc14398e6d49a06bbc08682/1606501273378/welujixajekapenukogupelu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe22bb9ee0f32b871ccfd2/1606296252445/ozark_music_festival_lineup.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10fb5bda9c57a97bf17be/t/5fc37a35eaf37e3b6408bbcd/1606646328936/ray_bradbury_quotes_dandelion_wine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b30d5e6f-9665-4074-8e0c-05267e06bb70/fawenokonewefeg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e90c27a199023ab56552/t/5fc5b14c9ee0f32b871899f6/1606791501411/27878170637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f783206-c356-435a-9e79-91a96c56c549/valkyria_chronicles_2_guide.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_off0000c782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC782 4948 bytes
SHA-256: c9719a1c4e45e1a01d3f1470f0a55a8bf286456d0570659f421163a0aedfa480
font_01_sfnt_off0000d86a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD86A 10188 bytes
SHA-256: eaaf0b8ecbc74fae451f4f1daf4420b7148a5beb230f6de02c009b061fbf1ed3

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