PDF malware analysis — malicious · 17c5c25b4b9b6191

MALICIOUS

PDF

66.1 KB Created: 2020-11-10 23:28:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: ab00df34800657af0d5ec046f41ddabf SHA-1: 48162fbc9e9a52d577a7c5fa15a3ada87c21fdb1 SHA-256: 17c5c25b4b9b619191bbc80db29ed072171d88fdc71e26597ed523c5d19f41b8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, trafffi.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/123?keyword=jennifer+lopez+sheets+queen PDF link annotation
- https://wojazaxu.weebly.com/uploads/1/3/4/5/134589930/1f1df4d0cf086.pdfIn PDF document text
- https://tinavabubopani.weebly.com/uploads/1/3/4/3/134317914/c91fd22cd42.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369332/normal_5f8a5596d21bc.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/e1dc561e-1797-4bf1-9fe7-65e93f791c0b/94659625000.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2cf77575-d059-4395-8a8f-75881ab1008c/17610688589.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b00a35ad-66ac-4a27-bf8f-a9fd523ce4f5/nopoma.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9f6e06d-f05c-4841-ae2c-b11620e1f89a/vomojofap.pdfIn PDF document text
- https://s3.amazonaws.com/mufukep/porudaguwuvage.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/58d3f161-75ba-4425-85cc-c3e473988fc5/vrchat_modify_sdk_polygon_limit.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1d8deaba-2be2-4c76-9ac3-08fcaf1069c0/facial_piercings_mods_sims_4.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_off0000c753.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC753	4944 bytes
SHA-256: `6804a1236bcb7412f70f30d6dbc52148d1fdc17d935fb57abd8334a89857a871`
`font_01_sfnt_off0000d830.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD830	10424 bytes
SHA-256: `159f8943d92575ae1109656c947706f4c50e286194d07270933802a9cc146733`

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