PDF malware analysis — malicious · 3bd43ffb714b312e

MALICIOUS

PDF

87.9 KB Created: 2021-02-17 02:39:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: d28c427aa1da4b393ed13e0ffb63f5bb SHA-1: 106bf0f4ae1b58e6aecc8da79126fa846af304a5 SHA-256: 3bd43ffb714b312e55b043985b34c5246de253e0893deb63d05138f4aa6d585b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to deliver a malicious payload or phish for information.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://maypoin.ru/123?utm_term=gdp+and+tax+revenue PDF link annotation
- http://handler-autoscout24.com/xufejijaxozljg34.pdfIn PDF document text
- https://cdn.sqhk.co/kolazapikib/hahhjge/amtrak_phone_number_los_angeles.pdfIn PDF document text
- https://cdn.sqhk.co/rujuwawuju/JQidjew/15236350956.pdfIn PDF document text
- https://cdn.sqhk.co/besuduxikuvo/bghhdhf/nirep.pdfIn PDF document text
- https://cdn.sqhk.co/nawakema/dijpjhv/mda_chemical_structure.pdfIn PDF document text
- https://cdn.sqhk.co/raxuzuvuluf/q9igOq9/ben_10_alien_swarm_smash_game.pdfIn PDF document text
- https://cdn.sqhk.co/visesefider/H6ji5zs/tusukosafudoxiwalimu.pdfIn PDF document text
- http://menbp.online/marvin_gaye_pop_songc18co.pdfIn PDF document text
- https://cdn.sqhk.co/tejosepu/gMnTYjb/simple_modern_office_desk.pdfIn PDF document text
- http://s-tochka.ru/46144461395ou332.pdfIn PDF document text
- http://aycotoro6.xyz/leluronomakogewolifagifese6ask.pdfIn PDF document text
- https://cdn.sqhk.co/bibilofefi/ijhciiv/92400982442.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/jinotugiwomo/fogufar.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_off00011afa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11AFA	4904 bytes
SHA-256: `56e59b1801cfc364878ebd5911e457a2c058a1c924e84ffcaf6f6b80b3ba80e9`
`font_01_sfnt_off00012bc4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12BC4	11512 bytes
SHA-256: `cd15c7521b8dcc73a6fb379d36e11380fd8e410c8d7fcc64513816dc3595e5f7`

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