PDF malware analysis — malicious · 43de56de24a2815e

MALICIOUS

PDF

116.0 KB Created: 2020-11-14 07:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 35b5063e73b2ac710eb15bf946079f80 SHA-1: d6757ffa1b1279ec205507955c8085c96622547c SHA-256: 43de56de24a2815e076ae8915a6328a28787312c6f0270c09bcdfa3b146db95b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that points to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to serve a secondary payload. No scripts were extracted, but the presence of the external URI is a primary indicator of compromise.

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://trafffe.ru/123?utm_term=nappa+power+level PDF link annotation
- https://cdn-cms.f-static.net/uploads/4417030/normal_5fa54e8676668.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384301/normal_5f997ba039f3f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472760/normal_5faaff12120ce.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413976/normal_5fadab901399e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418175/normal_5faf5cc9a3666.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371543/normal_5f8e1c555a0f1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383678/normal_5f95658676598.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/wewuxuviwar/tropismes_sarraute.pdfIn PDF document text
- https://s3.amazonaws.com/jumedemimo/adjectives_degrees_of_comparison_list.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/jowuvofopaxubutadaz.pdfIn PDF document text
- https://s3.amazonaws.com/kitakilesa/43101598543.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/01d990dc-be56-498d-ba3f-270ce05a46c9/50702626437.pdfIn PDF document text
- https://s3.amazonaws.com/wixamupelinere/wings_of_fire_book_download.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_off0001882a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1882A	4756 bytes
SHA-256: `bd481c479c7bd07ab2684ab1e43470042d6ac1b64ae0d7cd7fd79f2dce3ffc5f`
`font_01_sfnt_off0001987f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1987F	13828 bytes
SHA-256: `dea17f0b993496615823a3529c5434ca8ef88d2277a753db7920af518d1eb99f`

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