PDF malware analysis — malicious · 87513b3b19909cdf

MALICIOUS

PDF

75.6 KB Created: 2021-04-14 07:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4be731bf1321637f43a4d84d68febd4 SHA-1: dae1b7c0646c9d38f8f52309a8c7ab635bef61d4 SHA-256: 87513b3b19909cdf402653cb2a6ac13badfeaca453484d97b0516067c2ea4067

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains multiple embedded URLs, one of which is flagged as a potential phishing or malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'sherlock holmes short stories pdf', likely to trick users into downloading a payload from one of the provided URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/strik?utm_term=best+sherlock+holmes+short+stories+pdf
- http://okrasote.info/boxoxodanemitemogin9abfz.pdf
- https://tajixuxax.weebly.com/uploads/1/3/4/7/134751877/zotijejojijesur_lawogadususew_suxedoxefevupu.pdf
- https://dajetulanew.weebly.com/uploads/1/3/4/3/134309067/jetune.pdf
- https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/356942d47.pdf
- https://cdn-cms.f-static.net/uploads/4443802/normal_605820dad9507.pdf
- http://copyrightviolationcenters.com/z_table_normal_distribution_online504ne.pdf
- http://bewizasosu.sportsontheweb.net/analytic_and_solid_geometry_formulas.pdf
- http://xogavuw.medianewsonline.com/assam_university_tdc_routine_2020.pdf
- http://zujewubowufonug.scienceontheweb.net/jixalajoviwudotu.pdf
- http://lishop.site/xodawapetosavijubalenugjm01g.pdf
- http://sigixexizo.sportsontheweb.net/social_media_marketing_business_plan.pdf
- http://kogowetek.getenjoyment.net/tawaxowepuvofumulog.pdf
- http://disclosures.space/82299234436cgixt.pdf
- https://gatojodegapov.weebly.com/uploads/1/3/1/6/131637656/a6c4126c.pdf
- http://presente-top.store/62470286634bj9oo.pdf
- http://airet.space/forgotten_realms_gods_of_warmdhb7.pdf
- https://cdn-cms.f-static.net/uploads/4384325/normal_602cf0023b6a2.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://diwavubodinaroj.myartsonline.com/wapinoripakivepabasu.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_off0000ea79.bin` `3575acbe96d81dc9e56127eab3e3daa25504ca34b797a9dc64680e706e1aa477`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA79	5300 bytes
`font_01_sfnt_off0000fc5b.bin` `678381983b3d51731c07c2739062fd91a751193e3cc5860c5564ee1d521ea9cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC5B	10740 bytes

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