PDF malware analysis — malicious · 97527a8e83f269b4

MALICIOUS

PDF

79.9 KB Created: 2021-07-16 01:36:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 50cf1d8ad49ef80860b45c9bf517064e SHA-1: 784565c9ac11c8b9444ab3836e12817d8df7f4b2 SHA-256: 97527a8e83f269b4591d1985d8e1e1fbe3f9e08753a049e2564edc5d4302a9d6

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV specifically flagging it as Pdf.Phishing.Trojan. The presence of embedded URLs, despite some being marked as benign, suggests a phishing or credential harvesting attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall indicators point to a malicious PDF designed to deceive users.

Machine Learning

Nyx PDF Classifier malicious score 0.9478

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/J-SxIuB37Ms/square?utm_term=little+by+little+inch+by+inch+song
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8227d5c13cc4fededaeeb/1625825917505/similarities_between_essentialism_and_perennialism.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f09f181e90cb6e18327882/1626382105178/worthy_of_it_all_song.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ede375cc8e436e4665e06c/1626202997768/tufigoxakivivivupexora.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec8290c217102653d63325/1626112656932/55388798995.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee81929b1e4d6a3610f7d2/1626243474205/hotbot_full_movie_download.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f08f37e85da4654fb5a1aa/1626378039504/8377209975.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee09d184a0477e84a76563/1626212817092/angles_worksheet_with_answers.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0ae646b9e380665690dc2/1626386020486/vopareruw.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_off0000d68b.bin` `194aa5df4fb8f3f3e64ee3f2a1d67e6182ec914f328e26ed7348df3abefd3c55`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD68B	16644 bytes
`font_01_sfnt_off0001020a.bin` `55d40f06831cd201a70fef4118a148a774fb8e99bbd068203ebca240a42ed1d6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1020A	10456 bytes
`font_02_sfnt_off000119ba.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x119BA	16792 bytes

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