Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d2388353373d77…

MALICIOUS

PDF

78.2 KB Created: 2020-12-30 15:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ca55bc6d37177182e3e752077bd57385 SHA-1: ec01566141fec5c1502def17302c2d4f7bb62929 SHA-256: c8d2388353373d772b1ac3ffd559954aa64880deab1c277660320c6022316a2e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a suspicious domain, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, appears to be related to a game guide, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=dragon+mania+legends+battle+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488349/normal_5fd1faee5c469.pdfIn PDF document text
    • https://cdn.sqhk.co/wixadigizal/RA4Xz0J/jubibuvonebekiriki.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/makumapikeze/baal_veer_1111_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f70b9e21-9fa8-4f2a-89f8-f04c2ce34c3b/ap_english_lit_essay_tips.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4898192-56d0-469e-bf15-b64f4bd300f9/wuveleviloro.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/abstract_reasoning_test_with_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/55097459674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/148357a4-404a-4820-a293-e2c85f646d58/masivudolugoxutetisim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/595fc511-d9f9-4e6c-ad6d-983c8f799ec0/94828240008.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16c18371-d09c-413e-b0b5-4e5e01b93db4/16_personality_test_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f29cbef-c841-44b0-861f-4777eb2415ac/2012_yamaha_ttr_230_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/listen_to_my_heartbeat_song_nightcore.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/53607342382.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_off0000f5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CC 5284 bytes
SHA-256: 2d4b39ca72dc2f74258b2fa0ce932b6b5d462a455d83d910a654c01c9fcd5a84
font_01_sfnt_off000107ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107AE 10568 bytes
SHA-256: 5cd0c09b7fe04d196837b6246c3ccf2709f0acb90c947f0b0cadeb93900e88cb