Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b39983f8b16725…

MALICIOUS

PDF

142.1 KB Created: 2021-07-21 15:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c7620a54b817cf519b677677a1f53123 SHA-1: b1200debe57ff5058be749b998bca357a8b26743 SHA-256: 24b39983f8b16725a0641be05336e286f2bf417e751b90c670793309245910aa
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The PDF structure and embedded objects are consistent with phishing or malware delivery techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://feedproxy.google.com/~r/sq/ugae/~3/HbdJGeoIq_s/square?utm_term=bill+cosby+younger
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f33ee0c2d40e67ec0a0895/1626554080248/dovetedesefije.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed95e25e50ea0df8df94c4/1626183138786/nimixanurufitoxoxegozorag.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f100ba0a71fd0da9abb1f6/1626407099069/83446781353.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2cf8704a1d97017954049/1626525576069/hilarious_test_answers.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e86ea3ba7b104dfc0a617c/1625845411655/vojeziparirurif.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f61289a22c811cd222cba4/1626739337333/69648304054.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f6a629632cc27cc563d1b2/1626777130118/65861106119.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f11eec5d599800102e76bf/1626414828601/small_business_income_expense_spreadsheet_template.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f3ee6cdeec5816203555f7/1626599021240/rotavavoguzopiwopobufus.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f7a91086bb0f67147952de/1626843408198/rotejuwidamogi.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e940aa8915684aa53e414b/1625899178312/music_auditions_near_me.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee3bf8df3d323292d06389/1626225656666/world_history_journey_across_time_the_early_ages_answers.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f066e540a5bc6c0f74a6f7/1626367717427/photosynthesis_in_c4_plants_is_relatively_less_limited.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecd83d4616123fc5f2d6be/1626134589309/fight_night_champion_pc_game_download_free_full_version.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f378691d3507074220e78a/1626568809519/symphony_number_5_piano.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7810fd54eb0708249fcd/1626109968798/corkys_bbq_ribs_cooking_instructions.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f80ad33fe7684a17bde700/1626868435650/free_software_to_convert_jpg_to_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee73197c5bce1f33504a08/1626239769467/answers_to_tell_me_about_yourself_interview.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8ce9a4072d952528eb426/1625869978180/49345424889.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001cb63.bin
3cb0bb71600299999bef8ca696c778a74a083e9e12e1eacadea900855ff4cd6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB63 18208 bytes
font_01_sfnt_off0001faec.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FAEC 16792 bytes
font_02_sfnt_off00021303.bin
2fb35a7bb3d04628aecd876158990e0b76fc74673b4ef3709db19868af42397d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21303 10552 bytes

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