PDF malware analysis — malicious · 559cbf5a6a55fe94

MALICIOUS

PDF

76.6 KB Created: 2020-11-24 16:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 99a9f0754ef63c94e17a0778717fb6a6 SHA-1: d06dd55c382bfe6718423357bee9651ad6b836b7 SHA-256: 559cbf5a6a55fe9448655333c958f99bd53e8258c1cd63d817a49b11258637d7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, suggests it is part of a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=fragment+on+machines+summary
- https://cdn-cms.f-static.net/uploads/4375891/normal_5f98e3efaa123.pdf
- https://cdn-cms.f-static.net/uploads/4389816/normal_5f9f01a592c57.pdf
- https://cdn-cms.f-static.net/uploads/4423452/normal_5f9e1254e5fdc.pdf
- https://cdn-cms.f-static.net/uploads/4500200/normal_5fb34040d1dd7.pdf
- https://cdn-cms.f-static.net/uploads/4428035/normal_5fb5c4ed3ed69.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/7e5e1503-d7bb-43b3-8e8d-65e6c9185f76/4632911372.pdf
- https://uploads.strikinglycdn.com/files/488fb647-d360-4dac-9c97-20f04f20ac64/97652531837.pdf
- https://uploads.strikinglycdn.com/files/0d99425c-c40b-462c-950a-ca1fb29c5819/pudawebifudiv.pdf
- https://uploads.strikinglycdn.com/files/0afba12a-df71-40ac-8f42-a86afdb3908c/dukot.pdf
- https://s3.amazonaws.com/fazujo/two_best_ball_format_golf.pdf
- https://uploads.strikinglycdn.com/files/9eec5c64-fccd-4343-8a90-c45b2d506174/.pdf
- https://s3.amazonaws.com/zewimu/excel_vba_copy_cell_formatting_and_value.pdf
- https://s3.amazonaws.com/feborobegibew/cara_google_drive_idm.pdf
- https://s3.amazonaws.com/novipaliwid/ledis.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://scripts.sil.org/OFL
- 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_off0000d4c1.bin` `f0d6d49a2d06383dc7507dbb71bb0db47db762f120348b48401c9bf93833a4f2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD4C1	5240 bytes
`font_01_sfnt_off0000e674.bin` `6ce47a6c460ace028d4c4635e06c536d162c6c8dacbbef43e09edaad36289131`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE674	10328 bytes
`font_02_sfnt_off00010a24.bin` `38f2224ce5a0d4a273e5528eeb9a7ccdc1ff29c79593c7719517e6410027f269`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A24	17972 bytes

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