PDF malware analysis — malicious · 86dc6d3ab2da9b15

MALICIOUS

PDF

77.7 KB Created: 2021-07-13 06:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 8b13190c0770a9a7c74b5bf7a32b0cba SHA-1: 352d0e5abce164343f6489f5019c8abafe15ffc1 SHA-256: 86dc6d3ab2da9b15a269c2c4ac2b52cb81b2c750ee22b85c050576eb2b815215

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'archism.ru' was found embedded within the document, suggesting a phishing or redirection attempt. The document body is heavily obfuscated and unreadable, preventing further analysis of its specific content or embedded scripts.

Machine Learning

Nyx PDF Classifier malicious score 0.9937

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://archism.ru/square?utm_term=shalongo+guest+house
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7902de8c3264fe5dd690/1626110210320/997752457.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7d00de8c3264fe5e435e/1626111232563/62590477517.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8785edcc0950af0afb514/1625847902397/kind_words_that_start_with_the_letter_c.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80e431873c46ac93ba594/1625820739515/deber.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e906f518245d33f180b046/1625884405280/seven_things_i_hate_about_you_lyrics.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecb696d59ba7421a4201ba/1626125974474/at_what_weight_are_you_considered_morbidly_obese.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8cb369d4b63361479bc6/1626115251413/62091183878.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e796d6dbb92d34f5aac893/1625790166391/gregs_kitchen_and_taphouse.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ecbb26fc49d21b0b3f1f2a/1626127143246/wuwasodoxonugipomuwutiru.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_off0000cfb2.bin` `c12590679230c48c7184fbd4136527454bbef307da387c5fb0afd2fb9374487c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCFB2	10368 bytes
`font_01_sfnt_off0000e723.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE723	16792 bytes
`font_02_sfnt_off0000ff35.bin` `5caec0cbff13c252ee7b99fe3afaa22aab89b20fbfdb7362fdd6d57a83af49be`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF35	16840 bytes

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