PDF malware analysis — malicious · 51220f78c7a17664

MALICIOUS

PDF

76.3 KB Created: 2021-03-23 03:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 61dac71b35bd13d26256a50234cc641b SHA-1: 2f982faa0c2eb0901d424b7ab571d838e2f2e1f6 SHA-256: 51220f78c7a17664f12a7eed2cf6cdca6d9aa89ea4b40c1864f35590c445bd09

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains an embedded URL pointing to a domain that appears to be part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to trick users into downloading further malware by disguising it as a service manual. No scripts were extracted, but the presence of an external URI suggests a download attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://mezovuduw.ru/wix?keyword=dell+optiplex+790+service+manual+pdf
- http://pc-remont.website/cannery_row_book_sparknoteseqecp.pdf
- http://se-mrush.com/diferencias_entre_baofeng_uv-5r_vs_uv-5rey99ln.pdf
- http://gallery-shop.site/58861174853p6eha.pdf
- http://kolekewoni.mywebcommunity.org/befanulolabi.pdf
- https://static.s123-cdn-static.com/uploads/4456984/normal_5fff249778a76.pdf
- https://static.s123-cdn-static.com/uploads/4420238/normal_5ffb440ce83d9.pdf
- https://cdn-cms.f-static.net/uploads/4403806/normal_6044d7c89ab1c.pdf
- https://cdn-cms.f-static.net/uploads/4381752/normal_5fd154abdfe0a.pdf
- https://cdn-cms.f-static.net/uploads/4447465/normal_5fd72520545b8.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://jujuletofu.onlinewebshop.net/pengertian_uji_parametrik_dan_nonparametrik.pdf
- https://s3.amazonaws.com/guvovigo/kisunipiwunop.pdf
- https://s3.amazonaws.com/xijuxosisomuna/35334156776.pdf
- https://s3.amazonaws.com/poguvelefa/apa_format_citation_website_example.pdf
- https://s3.amazonaws.com/jakujakula/bokisedudefudesegemiv.pdf
- https://s3.amazonaws.com/sezewu/14874290389.pdf
- https://s3.amazonaws.com/gisujubolidine/sepifasatibubavon.pdf
- http://keregimuw.onlinewebshop.net/fantasy_theme_criticism.pdf
- https://s3.amazonaws.com/jolozidabi/tachycardia_and_bradycardia.pdf
- 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e971.bin` `7a1eac727939d98feec55f85af33b7be1868f85dc75ecd5db03987a02376f7f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE971	5808 bytes
`font_01_sfnt_off0000fd32.bin` `3dd79fc29d4a61aa6e643c4b7fb9e271afbc3880d2325af5c58fe8cfa9c3828d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD32	10928 bytes

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