PDF malware analysis — malicious · 0b4bd4a1c2cc12ea

MALICIOUS

PDF

66.1 KB Created: 2020-11-13 06:26:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 63231c94dd70863ce378b0d63a9e8646 SHA-1: b78a3e1b0a021ecc9ee255896f63d73ea5b5dbec SHA-256: 0b4bd4a1c2cc12eadfcf05eaae54549b9cc493489a389cc92785f7de37d468e8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though partially corrupted, contains text that appears to be a lure for song lyrics, likely to trick users into clicking the malicious link.

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://traffnew.ru/123?utm_term=something+just+like+this+lyrics+1+hour PDF link annotation
- https://cdn-cms.f-static.net/uploads/4407314/normal_5fa3b14abff9b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387821/normal_5f98bf13f2dc4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379384/normal_5f8b22820fb51.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/dukajevo/logososozozopasol.pdfIn PDF document text
- https://s3.amazonaws.com/jiwisi/lyrics_to_clean_heart_by_fred_hammond.pdfIn PDF document text
- https://s3.amazonaws.com/memul/badshahi_mosque_architecture.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/43978193-bce9-4328-81c7-9f7e2f8a67f2/68364041243.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/00037807-edbe-46ff-95ce-53d1f3f84b94/xojibilu.pdfIn PDF document text
- https://s3.amazonaws.com/wizidimawag/96032662143.pdfIn PDF document text
- https://s3.amazonaws.com/dugibabafod/pdf_to_autocad_dwg_converter_online_free.pdfIn PDF document text
- https://s3.amazonaws.com/kuboki/chemical_changes_gizmo_answer_key_activity_b.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_off0000c4de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4DE	5400 bytes
SHA-256: `7891f853fe3a4464625619635e23dee5685e2c17857fe31f57776d71616147e7`
`font_01_sfnt_off0000d72d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD72D	10672 bytes
SHA-256: `b5bbd1972ff96a76b5f7de482fbe74ee500886a48e05237b7cc320bed43f65b6`

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