PDF malware analysis — malicious · a84a70be6e869d91

MALICIOUS

PDF

63.4 KB Created: 2020-12-07 00:23:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 866f4c97657682b591ef58ee738553c7 SHA-1: 949dc822d0ab7709ea1ced3a29eb6e316739e5cf SHA-256: a84a70be6e869d916c7dbd6cc225c2f7e5d865ff202031b1bd11c0577aa2a286

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL, which is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the presence of the external URI suggests an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://trafftec.ru/wb?keyword=predictive%20analytics%20report%20pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4445337/normal_5fc001f5cda37.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4394060/normal_5fa3bb1781aac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426421/normal_5f9e1c60c7d31.pdfIn PDF document text
- https://sikisesuleze.weebly.com/uploads/1/3/4/4/134445421/786fa490b9db.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kobivimelelo/71674251911.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/88f93d0c-1ebd-4855-ac64-ca06191fa02e/manual_de_rutinas_de_gimnasio.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/256991a2-d87f-45ea-ad00-bdbf9ec61961/computer_networking_a_top-down_approach_5th_edition.pdfIn PDF document text
- https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d9218e72e5fdbce0b39/1606372755760/pathfinder_detect_evil_and_good.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/xerogarizapi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/117c3778-e611-427f-ab1d-17aebdd970c0/mawukuvev.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000bd1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBD1B	5312 bytes
SHA-256: `78fc3b3cabfe4437f3bc74ff4f7cbd5cdb0d740a6d66d6d832d759753a3a67e7`
`font_01_sfnt_off0000cf49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF49	9988 bytes
SHA-256: `58f485ed12c097919652beaa80b26e2fda05ab418784666585dd6b80ea8a25dd`

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