PDF malware analysis — malicious · 2e0ec54d7121c0c4

MALICIOUS

PDF

63.5 KB Created: 2021-01-17 07:03:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: 21970e20b847635b4d3bb79bc6c1cc69 SHA-1: 9e08e6579c95340e6fc09dba9759a52ec6a4c7d4 SHA-256: 2e0ec54d7121c0c43ab5c5c3615f51604e91da20c777b73b8c21be76002acbba

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 'trafffe.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create documents for phishing campaigns.

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=skyrim+dragon+priest+staff PDF link annotation
- https://cdn.sqhk.co/vetedaxuzele/H7Lhjge/65540203752.pdfIn PDF document text
- https://site-1167950.mozfiles.com/files/1167950/52916955654.pdfIn PDF document text
- https://cdn.sqhk.co/pozuwifofub/egjhjhY/xejefajasojiwusanirir.pdfIn PDF document text
- https://cdn.sqhk.co/bumigorawi/XPjbOwZ/mufexasesidu.pdfIn PDF document text
- https://site-1168194.mozfiles.com/files/1168194/bullet_hell_monday_wiki.pdfIn PDF document text
- https://site-1168006.mozfiles.com/files/1168006/3d_photoshop_text_effect_free.pdfIn PDF document text
- https://site-1171989.mozfiles.com/files/1171989/lobster_traps_for_sale_ct.pdfIn PDF document text
- https://cdn.sqhk.co/bogulevim/22gehve/91901698520.pdfIn PDF document text
- https://cdn.sqhk.co/vuzefegevo/ig5hfyy/donkey_kong_game_boy_advance_sp.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/gadumagabusodel/63828467712.pdfIn PDF document text
- https://s3.amazonaws.com/kulinisokakewi/tuzusimusi.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_off0000bbc7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBBC7	5600 bytes
SHA-256: `7a80a73684b4a48e8b1f24b74248c7e59da3929cd094c112db8507fad6ce360e`
`font_01_sfnt_off0000cec7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCEC7	10240 bytes
SHA-256: `ad2233d2a67c013b57be2758b85ddc3d3ffcf8f9d2c4348cca471d0fe5b4e9da`

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