PDF malware analysis — malicious · d78c490f32d229a5

MALICIOUS

PDF

88.0 KB Created: 2021-04-04 17:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 18d09174695073fd7a8560b28396d44f SHA-1: e25d55d4e5e3dbd545431205c74bf7b169658bc4 SHA-256: d78c490f32d229a5af51d8a8de3da3cf55fbb796c21dde79b972674ead1038b6

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to host phishing content or a secondary payload. The document body is heavily obfuscated, but the presence of the external URI suggests a phishing or credential harvesting attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/aws?utm_term=sansa+clip+zip+manual
- https://cdn-cms.f-static.net/uploads/4490370/normal_5fd67e6e25979.pdf
- https://cdn.sqhk.co/pawanipol/jXUmig5/lakofedajegutenezoxera.pdf
- https://static.s123-cdn-static.com/uploads/4405185/normal_5fcff394943ed.pdf
- https://cdn-cms.f-static.net/uploads/4465702/normal_5fe9759e19c70.pdf
- https://cdn.sqhk.co/butituguxur/xgchngf/child_care_benefit_application_form_australia.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/wenobagupexekap/capsize_song_320kbps.pdf
- https://s3.amazonaws.com/vatakefojunib/dikepepuf.pdf
- https://s3.amazonaws.com/nafoxuda/wordscapes_answers_jungle_green.pdf
- https://uploads.strikinglycdn.com/files/0220b604-fbdd-4fff-a4f8-2ebee96071e4/what_does_kingdom_by_the_sea_mean_in_annabel_lee.pdf
- https://uploads.strikinglycdn.com/files/681f6eca-3b01-45df-a9b1-5c403d13aabc/juxibatugaxaredagex.pdf
- https://uploads.strikinglycdn.com/files/d04c906e-6a60-4263-8cea-acf5248cb3e3/17621817618.pdf
- https://uploads.strikinglycdn.com/files/892d09f6-9bd4-4abc-9221-2d2690bc2afc/51178198982.pdf
- https://s3.amazonaws.com/nazekisigiduz/the_fall_guy_truck_diecast.pdf
- https://s3.amazonaws.com/tugafebip/caballo_de_troya_11_la_rebelion_de_lucifer.pdf
- https://s3.amazonaws.com/bubisifapagefe/33391694320.pdf
- https://uploads.strikinglycdn.com/files/e58ba4e4-5e7b-4f42-9d8a-f8d0cc919969/bijerarekufikojinoga.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_off00011a0f.bin` `83c792d015b845902d0bb16f37b80c8bb503608f44665d3284f0ce4c725ebddb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A0F	5136 bytes
`font_01_sfnt_off00012b7c.bin` `02a10d9f48f0c2e9d34b1fafd995e05f6f44cab83f8a49f601595a1174362095`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B7C	11616 bytes

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