Malicious PDF — malware analysis report

Static analysis result for SHA-256 d568ca2e78384085…

MALICIOUS

PDF

99.6 KB Created: 2021-06-02 07:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aca296885e20ce4094d6bfbccc3a4b8 SHA-1: 52740c6563662a0c40ab1db6d329cd1802160566 SHA-256: d568ca2e7838408563f4bbbed9036cd54fc99e6b4aac007c83a760db6e976d5b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. No scripts were extracted, but the presence of the URI and the detection results strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://catamma.ru/pbw?utm_term=n+scale+track+size
    • https://cdn-cms.f-static.net/uploads/4369150/normal_6016b3406404c.pdf
    • https://cdn-cms.f-static.net/uploads/4477162/normal_6022c2893eb42.pdf
    • https://static.s123-cdn-static.com/uploads/4365606/normal_5fee689d5fbb9.pdf
    • https://cdn-cms.f-static.net/uploads/4426059/normal_60298645971ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/07346e3f-4ec9-4b28-8222-d335b04e2d5f/24730160483.pdf
    • https://uploads.strikinglycdn.com/files/be766996-cbaa-46be-9336-5f9a62cce2c2/90797856918.pdf
    • http://kufujibumufa.pbworks.com/w/file/fetch/144412485/how_to_do_a_paracord_handle_wrap.pdf
    • http://namikikis.pbworks.com/f/sapenapedilevugajop.pdf
    • http://biduzoku.pbworks.com/f/29592447605.pdf
    • http://gufabewa.pbworks.com/f/snake_rivals_mod_apk_26.4.pdf
    • https://uploads.strikinglycdn.com/files/bb5b7d24-c5ed-41b5-ba04-a375d8c9fb4e/tarzan_of_the_apes_sparknotes.pdf
    • https://uploads.strikinglycdn.com/files/68620c79-af6d-4d4d-9728-a4e487493090/famous_quotes_from_11_22_63.pdf
    • https://uploads.strikinglycdn.com/files/b85c1a1d-ea8f-46bd-9257-8dc47228974e/68462191098.pdf
    • https://uploads.strikinglycdn.com/files/db48fcc3-b311-403d-a64b-94ea75f38800/65905086829.pdf
    • https://uploads.strikinglycdn.com/files/eea63276-6cf0-4208-91f1-5a024d9da57c/the_woman_in_cabin_10_plot.pdf
    • http://fepewuwakow.pbworks.com/w/file/fetch/144486741/metud.pdf
    • http://visetululiv.pbworks.com/w/file/fetch/144415098/what_is_one_of_the_advantages_of_reproducing_sexually_or_asexually.pdf
    • https://uploads.strikinglycdn.com/files/f5e57521-733b-4703-896d-8a98e8a1787b/miniature_dachshund_puppies_wales.pdf
    • https://uploads.strikinglycdn.com/files/211b4030-9043-4bf2-9f78-80436b0b8913/how_futures_trading_works_in_india.pdf
    • http://jesababa.pbworks.com/f/wifi_hacker_pldt_apk_free_download.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://scripts.sil.org/OFL
    • 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_off0001322e.bin
7bc3758e4c7c2ea7b62e549139bb5a795c3b65e6ae9832b0619f8d1b89711a43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1322E 4876 bytes
font_01_sfnt_off000142dc.bin
45a77a3f068de57d85a7f77690ba96d7b88ce7d1f056310670d42f45038760ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x142DC 12192 bytes
font_02_sfnt_off00016c87.bin
ddedb84bd1e8a54b9f54678af270270befc79532f6c6f54dc4a61cbb1f9bc02a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C87 16072 bytes

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