Malicious PDF — malware analysis report

Static analysis result for SHA-256 3539964f7d2ec891…

MALICIOUS

PDF

86.1 KB Created: 2021-07-22 00:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5a3456cffe45c82416e81c8ae361667f SHA-1: 13f2f5b06970f9f588ec2d05dbe75e19de09466e SHA-256: 3539964f7d2ec8910320f73f6d2c1edff48af89df02cdb0f03154fced4016f2c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The embedded URL, disguised as a software download link, likely leads to a malicious payload. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into downloading and executing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/qI_NY8u86tA/square?utm_term=quantum+resonance+magnetic+analyzer+software+free+download+for+windows+10
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f3fd7fe13ee976660e6499/1626602879800/if_i_could_see_you_again_piano_sheet.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9c269cb57f380a79d934/1626119206729/air_force_gd_topic_2020.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f7a117f02e4006ea6fa841/1626841367516/how_to_merge_two_online.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee4d3ac27d1e40a54b6138/1626230074504/discount_stock_brokerage_firms.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f37f641434f63547266756/1626570596603/rudagaposunalafojiz.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f081c2cd12aa5cbeb8feef/1626374594805/xonagogarakadedo.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed92219db072196a243108/1626182177820/92157966413.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f8938abcd3bd79329769cf/1626903434669/i_have_acid_in_my_stomach.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee08b40b33b63bb8c1c63e/1626212532796/51751843249.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f41daa783e880aac874928/1626611114788/74727681534.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edae40c5e0b1320e36024b/1626189376964/fire_meets_ice.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f40d009c7c9f0ea9a12917/1626606848827/meaning_of_betroth.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee82620981f36585a5df1f/1626243683124/mutemegedadariforem.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed8888cdb2ce13c527e69d/1626179720303/54958525785.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0227a1a40e718905375f7/1626350203032/lovojurifazim.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8942a7095f53b5d9a362d/1625855019035/26198251733.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f88eb824c5f82eff486918/1626902200240/94450153689.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec9de497282d6f4692c9cb/1626119653032/tijapixinaro.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f1122be75c7a046d9bac47/1626411563211/nawavarobaz.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee340f8e3fff2bd3bfd3cf/1626223631518/21987969591.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee36c47d49fb55d626fe67/1626224324277/blue_sky_and_ocean_quotes.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f7ae873bf5736ec388eb83/1626844807480/nemefomoben.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_off0000e8a2.bin
31c11a64b976ded39260e35ed842b627bfe81c095b55e09c2d467beac5e3efa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A2 11412 bytes
font_01_sfnt_off0001038d.bin
7628460212f108f5d7eda817b55961cf08052cd0b085df6747e3e1994698769f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1038D 17556 bytes
font_02_sfnt_off0001313c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1313C 16792 bytes

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