PDF malware analysis — malicious · e2184038f9f6610d

MALICIOUS

PDF

79.6 KB Created: 2021-07-17 14:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 23b4e17979b0f786cf9043edd305f0b3 SHA-1: 64f889b70a59f917797bab20059fab450df754f8 SHA-256: e2184038f9f6610d4c62e279ce70afcc6e77fec6123d2ad3f36a1b688ff48b55

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains embedded URLs that likely serve as lures to download further malicious content. The document body is heavily obfuscated, preventing a clear understanding of the specific lure, but the presence of multiple embedded URLs suggests a phishing or social engineering attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9906

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/~3/4aHNpQc2m6I/square?utm_term=fortran+for+dummies+pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f19feb77c7cc658ba70928/1626447852137/tirumijenojiru.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee7e5efd66ff3739f22446/1626242654803/oakwell_country_park.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e948f58915684aa53e729e/1625901301437/42116201262.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee1daf02e0767984f132c1/1626217903420/what_is_triller_the_app.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edea796d720f75fb61eb0b/1626204793691/funny_quiz_questions_and_answers_in_english.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f1eb49a5d32b6e4ddb9749/1626467145208/12pm_bst_to_gmt.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f08bd26cc2533e4dfe829f/1626377170795/pacts_with_the_devil_book.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f00a2d34da7a51e3f450b1/1626343981236/spanish_male_names_that_start_with_j.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0641fddb9184a160b98aa/1626367008059/74651612601.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d64d.bin` `8fc1a3d0b157565d4659873ffd28c1206ccbe7efb4e58508e1c4a3d48f1a6219`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD64D	16668 bytes
`font_01_sfnt_off000101f0.bin` `fc0c962371c035f1ecd51bfd62f941916ecc995be8fa8181f246cd947ffec8fd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101F0	10692 bytes
`font_02_sfnt_off00011a6d.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A6D	16792 bytes

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