PDF malware analysis — malicious · b94e864e61f62148

MALICIOUS

PDF

68.1 KB Created: 2020-11-26 05:33:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bbe5605ae12836b264a28e262bec79ca SHA-1: 6c5ccddbe940a708a0bd25076ffb7bc79f379a50 SHA-256: b94e864e61f6214857a4772404571348ba74e1edb74bc8e41c0e180d6fdc5a06

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'kingdom of copper summary'. No scripts were extracted, but the presence of an external URI and the ML/AV detections strongly indicate a malicious intent to redirect the user.

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://traffking.ru/123?utm_term=the+kingdom+of+copper+summary
- https://cdn-cms.f-static.net/uploads/4368238/normal_5f87788c74448.pdf
- https://cdn-cms.f-static.net/uploads/4426087/normal_5fb5f9e426e1d.pdf
- https://cdn-cms.f-static.net/uploads/4488317/normal_5fbecfba1a4d7.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/sugowubuf/backstab_apk_data_mali.pdf
- https://s3.amazonaws.com/zamuriza/invertebrate_zoology_books.pdf
- https://s3.amazonaws.com/fuwawibu/functional_analysis_books.pdf
- https://uploads.strikinglycdn.com/files/aebbbc0b-cced-4296-8177-ec19bb3283b9/indirect_direct_object_pronouns_spanish_examples.pdf
- https://s3.amazonaws.com/titugome/roxulijetepokedogu.pdf
- https://uploads.strikinglycdn.com/files/d95e7763-71ed-4b3b-bdf5-ac9d7b4bf600/zikotiworuri.pdf
- https://uploads.strikinglycdn.com/files/0c6ba091-f951-41fa-b3db-5d24406dba27/gta_san_andreas_ahin_taksi_yamas.pdf
- https://uploads.strikinglycdn.com/files/a1717ca1-6e84-4198-ad9c-232f80a5c6fa/webster_collegiate_dictionary_online.pdf
- https://uploads.strikinglycdn.com/files/1baad1e9-132a-4441-b747-397b53fe7cbe/columbia_nightlife_guide.pdf
- https://s3.amazonaws.com/fejififimaketo/ruguxaxinarozaxukubuxemex.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cce2.bin` `20258a2111c204ae8f0ccf515b1e811fe7d62233622b2eeff6732ece66d65183`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCCE2	5652 bytes
`font_01_sfnt_off0000e002.bin` `497f4e95a353849d4f8787bfedc021343bf8df0155e7e19e0bf37616fa0e697c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE002	10656 bytes

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