PDF malware analysis — malicious · 44d957f38c04647c

MALICIOUS

PDF

73.3 KB Created: 2021-02-22 19:08:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 0fd65100c06607ecd3e530f56d758ca3 SHA-1: 5f4c66eac263d82bd27e3601e6bab6874731f990 SHA-256: 44d957f38c04647cf229ea2bd474b50b0d48a2e7f28bf1e14dc4d222d5a4a4ce

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. The document body, though truncated and obfuscated, suggests a deceptive lure related to 'things not allowed in russia'. No scripts were extracted, but the presence of an external URI indicates an attempt to lead the user to a compromised or malicious resource.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=things+not+allowed+in+russia PDF link annotation
- https://cdn-cms.f-static.net/uploads/4413693/normal_6018a0b13ca62.pdfIn PDF document text
- https://cdn.sqhk.co/vatuliwa/9jfHUuI/adobe_illustrator_draw_ipad_pro.pdfIn PDF document text
- http://golden-charm.ru/dagiboramudesidonezonirukmxx27.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454045/normal_600ee6ba8652c.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/bufexa/fakiduxo.pdfIn PDF document text
- https://s3.amazonaws.com/luramamelolem/zinus_platform_bed_frame_amazon.pdfIn PDF document text
- https://s3.amazonaws.com/didowugorokirug/estimating_gradient_of_curve_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/befafuni/db_legends_mod_apk_unlimited_gems.pdfIn PDF document text
- https://s3.amazonaws.com/fajujiju/ralaxagevetabaxorije.pdfIn PDF document text
- https://s3.amazonaws.com/popisiburewixuj/banner_photo_apps.pdfIn PDF document text
- https://s3.amazonaws.com/sagotomagin/fanugisoxogosu.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_off0000e4ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4AD	5128 bytes
SHA-256: `49b60cd3e22616146cecaf16c995e51a994cdaddbe7f051db8a8c259fbdb4364`
`font_01_sfnt_off0000f62a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF62A	10164 bytes
SHA-256: `bcaa25194c3ef42afb0888cbb6954d9328bac892ca36e146b180cc1512495231`

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