Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65eaa93e4f82799…

MALICIOUS

PDF

80.4 KB Created: 2021-02-22 18:15:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9e10ff216fecf025017da7550f55e1c5 SHA-1: 34c11e79f42c3803690f46fc524f96f8c5550bfd SHA-256: c65eaa93e4f82799586fb04a7c8f03b627f6adf561eed38e9a441fa13bca5bfa
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to a game, suggesting a lure.

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://seumenha.ru/aws?utm_term=what+level+to+start+curse+of+strahd PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376382/normal_5fe0505939013.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/7JaHJJv/gba_emulator_cheats_for_pokemon_leaf_green.pdfIn PDF document text
    • http://idealslimitaly.site/number_tracing_worksheets_freef8y1a.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/gijBiyj/ninumevut.pdfIn PDF document text
    • https://cdn.sqhk.co/mitejapeki/jh4SZgg/restaurant_story_vegan_stove_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/Qig0AL3/after_burner_climax_ps3_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dofubetu/hBqKB0A/world_conquest_war_strategy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_601fcbfbe3dbd.pdfIn PDF document text
    • http://experiment.website/67775643268ypkop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420586/normal_5ff9313de9c48.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/iiYhclv/digital_wellbeing_and_parental_controls_uninstall.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/wazorixekunafob/dublin_ohio_police_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/52347662494.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/android_tv_app_store_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/calendar_method_of_contraception.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/mibigexupitefadov.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_off0000fb07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB07 5180 bytes
SHA-256: 3a9285ba74fa3c6871fe5b69a063ce55e68b3349f4356c2c1af1606ab0004e3e
font_01_sfnt_off00010cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB1 11544 bytes
SHA-256: 4ac6665d62de83bf5d377b0c5340ed44f2406478b543200a7b486757c5287a4c

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