PDF malware analysis — malicious · 1776ca5c49fbf44d

MALICIOUS

PDF

160.8 KB Created: 2020-11-19 19:14:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: acac4a242d01e5fbf8d9ecb65066a3c9 SHA-1: 1d699a8d1eec89e0f568436e1f177933d5608eff SHA-256: 1776ca5c49fbf44d90935ceb85d9b68e89053986f40616d370b0bd53c92f5f08

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to an 'installation guide'. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

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=oot+randomizer+installation+guide PDF link annotation
- https://cdn-cms.f-static.net/uploads/4367927/normal_5f9449b615e12.pdfIn PDF document text
- https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/jurulobeguvoliloxel.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427093/normal_5f9c9e35b6031.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378830/normal_5f8c86537a20e.pdfIn PDF document text
- https://fezuxikazosulav.weebly.com/uploads/1/3/1/3/131398093/3321170.pdfIn PDF document text
- https://nagilozumovamag.weebly.com/uploads/1/3/4/3/134317868/pareworojuxeme_dagutup.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/b3b5a839-c73c-485d-ade7-1a230ec28cba/33626863031.pdfIn PDF document text
- https://s3.amazonaws.com/vogubivajavofu/pomodesokiwutapoku.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c797f48b-f4df-4855-ad74-36cdc5fbff8c/93058136782.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c4cefc9f-6714-45a1-8f1d-55b62e2b1daa/newibe.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_off0002340b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2340B	5224 bytes
SHA-256: `47e9081b86e7a593b5418c1bd8b1735ca62709e5ba8eef7d93bfee8783a17a2f`
`font_01_sfnt_off000245b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x245B8	14996 bytes
SHA-256: `fd680fbc448d3a6f8eb8e1f091a875d96ae781350cd48186e88d48dd3ceb3d95`

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