PDF malware analysis — malicious · 8ef121c3357f662e

MALICIOUS

PDF

75.6 KB Created: 2021-03-10 21:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9e6905d73ac8957036d85dbcb767fd10 SHA-1: 1c9f08e12512ac69d6d9573434c3ca0ae7c99c16 SHA-256: 8ef121c3357f662e059b9064cb74a03fcb10ab97f5f306cccf0650e006f4d26d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains multiple embedded URLs, one of which is `https://vilenefex.ru/aws?utm_term=insinkerator+badger+5+broken+reset+button`, suggesting a lure to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with phishing or malware distribution campaigns.

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://vilenefex.ru/aws?utm_term=insinkerator+badger+5+broken+reset+button
- https://cdn.sqhk.co/lijusute/itsidkj/wacom_drawing_software_for_mac.pdf
- https://cdn.sqhk.co/regomesu/jge3VyX/60632966584.pdf
- https://cdn.sqhk.co/xawobovuji/aDibHjc/59018453645.pdf
- http://cocobuka3.xyz/lurinilasidivefutk1un.pdf
- https://static.s123-cdn-static.com/uploads/4385612/normal_5fc6829feb1b1.pdf
- https://cdn.sqhk.co/labojime/hCgcijV/emergency_services_online_chat.pdf
- http://fb-pageunderreview.com/23698952739s8zz3.pdf
- http://legendbilisim.com/free_nc_notary_public_practice_testqmfy6.pdf
- https://cdn.sqhk.co/dijabidasu/AgiIfjd/tifinetemoxoj.pdf
- https://cdn-cms.f-static.net/uploads/4465127/normal_6046432b09c2f.pdf
- https://cdn.sqhk.co/pujapipiwat/Ajj8Ohg/final_fighter_mod_apk_obb.pdf
- http://vulgargirls.fun/snap-on_digital_torque_wrench_for_salevh21p.pdf
- https://cdn.sqhk.co/sobekalob/bDHalx3/9140991785.pdf
- http://com-connexion.xyz/72_melakarta_ragas_chart_in_tamilfhvjn.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://vegefozexus.rf.gd/wabozer.pdf
- http://tudikon.epizy.com/27225883389.pdf
- http://ponadik.epizy.com/brain_death_eeg_report.pdf
- http://wepinipinalojud.epizy.com/20459441617.pdf
- https://s3.amazonaws.com/janodojivi/bootstrap_4_admin_template_angular_6.pdf
- https://s3.amazonaws.com/jesidofefe/bissell_little_green_spot_cleaner_manual.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_off0000ec82.bin` `e06afbfd3de6ff8ee7522bedd6e6f2cda15fb5844fb6785ce50033e0654c00c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC82	5228 bytes
`font_01_sfnt_off0000fe5d.bin` `648e15871f6b20bc03f6dd27c094cc61ce5f5347a1e91e4d9b4dd670718ac297`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE5D	10136 bytes

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