Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b63b96d96966fa…

MALICIOUS

PDF

83.9 KB Created: 2021-07-23 04:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1917c712060d3d7ea164cb118a28f6c5 SHA-1: e6b3d0522ad353be6bd2642dccace559954c8fce SHA-256: c2b63b96d96966fa30cd4f24b2e2f5051706489794c0159f04cfd301e52990eb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of embedded URLs suggests an attempt to lure the user to external resources, likely for phishing or to download further malicious payloads. The file's structure also shows signs of manipulation, with duplicate object bodies.

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://feedproxy.google.com/~r/sq/ugae/~3/5VO7y1TeAqQ/square?utm_term=roasted+fennel+and+carrots
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eda23cc0b9b61b5975171b/1626186300565/the_outer_world_trophy_guide.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f7b36dd401bc6ded29ab99/1626846061422/45862091352.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f5ecbd6814364efe0dcecf/1626729661683/nanopireji.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f67ea02fd42108f741f202/1626767008053/wepevulubol.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f8f7d95ad3337a4c4f269a/1626929113833/21799694265.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f06553a5088e0591417144/1626367315881/fotifezusunorojaja.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f01f0be4fb0f110d7cff20/1626349323998/47091347326.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f02545a26b2b69a35f0425/1626350917632/research_proposal_sample_social_science.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f252a41ad9bf1c32a9e46e/1626493604703/salumixibuburerilusefiso.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e79b1623621b4743e07179/1625791254882/live_sports_tv_streaming_apk.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4b19d783e880aac8f3734/1626648989458/nelson_chemistry_12_lab_answers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0d3af06e5cb5c82603194/1626395567152/wilderness_travel_trailer_owners_manual.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f8251ebe44302c93f65c5b/1626875166846/purple_and_blue_names.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e919c7defa333328aa41be/1625889223447/hacking_tools_for_kali.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f09cd293092e27c5cdbb16/1626381523507/babbles_to_self.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edf53f172ba47bdac628d9/1626207551581/suzanne_fogarty_chapin.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f3a85fac778402356f5b4c/1626581087836/26805224523.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f3a9e46d5e991e36e41eec/1626581476520/what_does_cya_mean_in_text.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_off0000e580.bin
bf2218a60dcf41c6e0a5f4d9ae77e9b68bfbc88aeec9d7cbd731146814140374		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE580 16904 bytes
font_01_sfnt_off000111c0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111C0 16792 bytes
font_02_sfnt_off000129d7.bin
3718b00667f10342075010697e3d7d65386d6493e4ed99e9adc9fd51583b40f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129D7 10424 bytes

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