Malicious PDF — malware analysis report

Static analysis result for SHA-256 8668c9fe14a30f78…

MALICIOUS

PDF

85.4 KB Created: 2021-07-22 00:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c92ce637a232efc08dc7386545e0e006 SHA-1: 1f755e78e686d5464f21102c6f2b4172e801b78f SHA-256: 8668c9fe14a30f782ade20f06a59da54b173ec2ac3aa00d280ffe13c80d13c0e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of embedded URLs and the PDF structure suggest it may be used for phishing or to deliver a secondary payload. No scripts were extracted, but the PDF's nature implies it could exploit vulnerabilities or trick users into downloading further malware.

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://feedproxy.google.com/~r/razvivatel/yapz/~3/gPkW7oTCsL0/square?utm_term=in+south+east
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecc4e879af8a1ae19bb1e6/1626129640938/ap_district_office_manual.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f864c4164b135e8ffad627/1626891460737/zelunepozunif.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f503f25f13a15bd833733d/1626670066814/a_cup_of_tea_katherine_mansfield_summary.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9066d8ce0e10532d1b671/1625884269390/93101980826.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e971025aa46e30cffd8c/1625876849155/one_piece_stampede_full_movie_eng_sub.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f8712184317f633d740acb/1626894625419/office_365_interview_questions_and_answers_2020.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8f864e6a58043b68fc45a/1625880676206/types_of_environmental_impacts.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f45ad5ec5ad00cc09a0b56/1626626774027/imagination_earth_wind_and_fire_lyrics.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec88878bb04542cee50fe7/1626114184109/tetotek.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edfa6f37ddb5439bf9f1c1/1626208879984/wubotuwinufisijowojemufa.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c69ba7bae82fe89680c0/1625867931926/100_most_deadly_things_on_the_planet.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e79f0852059f1ec1e08f0c/1625792264710/restructured_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f182f0e7c78223958ca36b/1626440432120/vadisurexuvawe.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edae93c2b60e0ed5b67236/1626189459124/13154723814.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f58a2c783e880aac9ab318/1626704428970/as_a_result_of_the_black_death.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f1f8f12347b801e9d94364/1626470641796/foreign_affairs_office.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f705f25aacb92c205835f3/1626801650535/male_bengal_tiger_weight.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8cea85ef51a130ea07773/1625869992073/convert_to_word_pictures.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8034646a8e17713e64825/1625817926881/how_to_upgrade_residential_buildings_in_simcity.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eddab9e7c05a5352565fff/1626200762004/vaxoxugixeriduvivimilav.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_off0000eb26.bin
039c63132870416b4acf6e6f73d2a82b85b953257f9fe40010a6becde325dfd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB26 17140 bytes
font_01_sfnt_off00011844.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11844 16792 bytes
font_02_sfnt_off0001305b.bin
56afa486153a422ffa6bc3df8f2894d6b156eb617c87c14ecac87c2b6c04680f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1305B 10016 bytes

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