PDF malware analysis — malicious · 44c342878812c3de

MALICIOUS

PDF

73.9 KB Created: 2020-12-27 04:24:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 440843db874da68031d73b3117afd615 SHA-1: 19709aed6e707bc5eaeed4bd437ac00782682a48 SHA-256: 44c342878812c3de581ae5345c096ca055bd15fa81646009449f64c4913d9684

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that, when clicked, leads to a suspicious domain. The document body, though heavily obfuscated, appears to be a lure related to search terms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

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://trafftec.ru/123?utm_term=twin+air+mattress+walmart+near+me PDF link annotation
- https://cdn-cms.f-static.net/uploads/4445320/normal_5fb97df8c0ced.pdfIn PDF document text
- https://jesebumu.weebly.com/uploads/1/3/4/6/134617302/kubuxugof_pufaferikejapod_ligebikuzaj.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366639/normal_5fe2f89deda79.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392191/normal_5fa30e9720a35.pdfIn PDF document text
- https://basurujilitafap.weebly.com/uploads/1/3/4/5/134595952/75c2ef2.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/4dabb17d-61b5-498d-ba11-391b299cbd2d/fexadoxofegizog.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b9dd2b29-6bfd-46a0-a762-29890d1b887e/tamil_uyir_ezhuthukal.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/704bb555-9dbd-4869-a090-1c0fa7871e6a/charles_leadbeater_we_think.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/40ca4d36-3ab3-4ef9-a644-b330cd371204/52787092264.pdfIn PDF document text
- https://s3.amazonaws.com/tinivukedeta/bubble_answer_sheet_20_questions.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_off0000e554.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE554	4872 bytes
SHA-256: `57e7430cb1e16033594479fa601e5a229dbdd78d2a079d510daf1e516fc51a2a`
`font_01_sfnt_off0000f5db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5DB	11092 bytes
SHA-256: `e2b7caeee27b0e249c21c7dc111c3e64ae24777d83a58c028e2e86b536756824`

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