PDF malware analysis — malicious · 77245ba839d71d40

MALICIOUS

PDF

70.3 KB Created: 2021-02-15 03:49:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 057bc911a4bce30e8c82641a90baa68e SHA-1: a33cb8da865362cd456124f25d2f5d0afe740a02 SHA-256: 77245ba839d71d40f5a837522767f2f88cbbf66c10e8235379821402bc3bd914

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL 'https://maypoin.ru/wix?keyword=wellhello+apk+uptodown' suggests a phishing attempt to trick users into downloading software. The ML classifier also strongly indicated maliciousness.

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://maypoin.ru/wix?keyword=wellhello+apk+uptodown PDF link annotation
- https://cdn.sqhk.co/jeporikate/idkCohc/bee_backpack_purse.pdfIn PDF document text
- https://cdn.sqhk.co/wefonasifaza/4hhjhnU/castle_defense_online_mod_apk_1072.pdfIn PDF document text
- https://cdn.sqhk.co/wuwexosul/ijeyhjR/melalukirezufakegowi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410679/normal_5fee0f828ba88.pdfIn PDF document text
- https://cdn.sqhk.co/kasavakujosi/eEjfjgh/word_cookies_answers_mocha_15.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471464/normal_602589c0d7663.pdfIn PDF document text
- https://cdn.sqhk.co/wepigosogo/wKvjjji/fotemid.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379032/normal_5fe40240b16ca.pdfIn PDF document text
- https://cdn.sqhk.co/noruwotil/UWOPXir/sacred_sword_princesses_wiki.pdfIn PDF document text
- https://cdn.sqhk.co/teketerep/fz1jigg/94328368666.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384029/normal_5ff88c3d300c0.pdfIn PDF document text
- https://cdn.sqhk.co/nadipozow/Hziamia/free_apple_tv_apps_uk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d809.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD809	4940 bytes
SHA-256: `31e9f5315efea03709adacad8133bca79cddf070a0061705e3c613ed8f8789ee`
`font_01_sfnt_off0000e8ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8ED	10420 bytes
SHA-256: `9f554a03311064d47f0a56e8b64d60f1cd2e47d188424c786611b4bdf6c987a0`

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