PDF malware analysis — malicious · db06b9a79227ec8d

MALICIOUS

PDF

80.0 KB Created: 2021-07-16 14:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 77e988d5bc4f9b53eb4729f87714d341 SHA-1: e4bad3431ba3e7ac5aba6909e0d0b6b84f93ca94 SHA-256: db06b9a79227ec8d767f4770f3a735621ea2a12ef280e123e81a00ab27821e79

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to an external URL, which is a common tactic for phishing campaigns. The PDF structure and embedded content suggest an attempt to disguise malicious intent.

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://infrive.ru/square?utm_term=somewhere+a+place+for+us+west+side+story
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e940b7025aa46e30d3de1b/1625899191381/cherokee_county_land_for_sale.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edaa1e7d02012a3633329c/1626188318950/i_so_agree_with_you.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9333af807f1e1526b0a2/1626116916019/laurel_hill_state_park_trail_map.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edcfd977fc8e778b55c562/1626197977253/play_date_mp3_song_download.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee7cbefd66ff3739f2102a/1626242238707/38208258172.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed4339f95b5524f95184a0/1626161977623/saduxarozifuvowewefepomal.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f05d637affba70db7e2cdb/1626365283107/82234196171.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8424c217102653d657cd/1626113060640/transformers_the_last_knight_watch_online_in_tamil.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e791efefb14d11220cdab8/1625788911215/biochemical_tests_for_identification_of_bacteria.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_off0000d5c6.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD5C6	16792 bytes
`font_01_sfnt_off0000eddd.bin` `13dd9287fdba4f119b349306e0da788ae10586f093222ef0f8fdfd74239889c2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDDD	11156 bytes
`font_02_sfnt_off00010800.bin` `0272560e9606493bfa57c4de04c5aaae06aa3cfca99df14a5a72e355b0224c6a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10800	16692 bytes

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