PDF malware analysis — malicious · dc92db17b41923bb

MALICIOUS

PDF

83.6 KB Created: 2021-07-14 05:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 2bfc2f6385ced0858d5537f6d5b8d6c2 SHA-1: 5c958c0fafbe121032d78c82a1d475b766c460ac SHA-256: dc92db17b41923bb8e061dbb46e274459ccbaca1ba981e03da3ca51b40ea00c4

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, suggesting it may be used for phishing or to redirect users to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded content are indicative of malicious intent, likely related to spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9898

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/UZrB20b2Dcg/square?utm_term=google+what+is+a+verb
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e94047e6bd1231e608f176/1625899079913/98360274589.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e9273c0cbdad4d35060ae1/1625892668624/wow_starter_edition_limitations.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e92cab1448b0619848e6a2/1625894059913/49845095680.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60eda20f2d9f403b521201a2/1626186256397/san_antonio_in_what_county.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed92f702ab3a569c465d92/1626182391975/marathi_to_english_numbers_1_to_10.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8f590f7d8d50062cb450/1626115929484/initial_value_definition.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edffb24ff81d3e2817cd21/1626210226324/first_digits_of_pi.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8bb533add050c1b4a5d81/1625865043965/dakexalizimizozarewedegi.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9bd1c426b81e83020838/1626119121544/bogifofifomoded.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_off0000e619.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE619	16792 bytes
`font_01_sfnt_off0000fe2b.bin` `303c2578a2f4b96365b26caf0cfb119433a0c1e1813dd7566cf3ad1d1f9d3fc7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE2B	16284 bytes
`font_02_sfnt_off0001282a.bin` `868f8c8f10397be656740595d1d36a7b7ca8d9e873afb469126eba3e8fc31fe2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1282A	10616 bytes

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