PDF malware analysis — malicious · ec6b27f113f88069

MALICIOUS

PDF

66.7 KB Created: 2021-03-23 10:34:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 853316ab995bf2f510f51aa1daa73858 SHA-1: da6475a511437ee5fd71bec514dc56eeeb0910a3 SHA-256: ec6b27f113f88069d73d2cc853ddec52cb4b86eb9e9ea9c2149d67985ddec1fe

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL points to a domain that appears to be hosting malicious content, likely a lure for phishing. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to trick users into downloading further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/award?keyword=allahabad+high+court+judgement+order+copy+pdf
- http://dosaxurezifoset.22web.org/russian_alphabet_flashcards.pdf
- https://cdn-cms.f-static.net/uploads/4392207/normal_600ca70188a88.pdf
- https://static.s123-cdn-static.com/uploads/4367302/normal_5fc94b7542875.pdf
- https://cdn.sqhk.co/fipimomozuk/rcEqrhj/barbershop_2_back_in_business_full_movie_123movies.pdf
- https://static.s123-cdn-static.com/uploads/4421464/normal_5fcfa130f01a3.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://c8070bf9-ed42-4c5d-8eb8-ca35ee70f136.filesusr.com/ugd/d38238_df56f47871034d46bd0d650b224e7f0d.pdf?index=true
- https://s3.amazonaws.com/tumuzu/27315240408.pdf
- https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_7cd08cf005ca443b8973e0be17346588.pdf?index=true
- https://21319658-e817-4d6a-846f-872ccfe0f0c2.filesusr.com/ugd/982af2_9afe81757f0e4b629faa5e8358e6cf68.pdf?index=true
- https://s3.amazonaws.com/guxosa/a_man_of_the_house_game.pdf
- http://zobotipuzadevi.epizy.com/clasificacion_de_cuentas_colectivas.pdf
- https://0a37a3d5-a0bf-4e77-8ff5-6127fd08aefa.filesusr.com/ugd/6046c9_a21a78cefca24b67ae9318b6f0b55e26.pdf?index=true
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b989.bin` `34d98e8af92b4fd234a7d28346969af6d0fd6511e37646148ba5e002036016f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB989	5580 bytes
`font_01_sfnt_off0000cc62.bin` `c036c8c0d3eea6846a2c303e7fc50252953e0f5ea691dc69caf06d366844c76c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC62	10332 bytes
`font_02_sfnt_off0000efbb.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEFBB	4324 bytes

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