PDF malware analysis — malicious · 1cf09c8e12acc3bb

MALICIOUS

PDF

65.4 KB Created: 2021-03-23 04:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1f66fb3e177b4d6a1a646b99dcb83b94 SHA-1: 4a8162a03957ade0074801ae718ef0bb17837577 SHA-256: 1cf09c8e12acc3bb6bc92e4cd3f7810b73a4f99394b3d903c63d1ec6263db147

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords like 'Commando fitness pdf' which likely serve as a lure to disguise the malicious nature of the links.

Machine Learning

Nyx PDF Classifier malicious score 0.8344

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
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
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://xajibur.ru/award?keyword=commando+fitness+pdf
- https://visegonikagade.weebly.com/uploads/1/3/4/6/134626066/kabev_depoja.pdf
- https://kufidadifijerid.weebly.com/uploads/1/3/1/4/131407945/5ecd36bceb3.pdf
- https://wanomumopanud.weebly.com/uploads/1/3/1/3/131379193/nemuwuxa_pukuda_gurovig_lusupawimol.pdf
- https://gogukosujupubof.weebly.com/uploads/1/3/5/3/135317205/lanipowabapawukik.pdf
- http://valuburikodajad.medianewsonline.com/wilcox_s_surgical_anatomy_of_the_heart_free.pdf
- https://redikuvemezu.weebly.com/uploads/1/3/4/8/134872152/timinojowikaf.pdf
- http://lukiduxipapep.mywebcommunity.org/nekazejud.pdf
- http://jarowulizose.sportsontheweb.net/cardiovascular_disease_symptoms.pdf
- http://jikusofare.mywebcommunity.org/35353942211.pdf
- http://lozipazom.sportsontheweb.net/larojijogelajadasagekow.pdf
- http://kazexajisodibu.medianewsonline.com/6401142656.pdf
- http://gedatidigog.sportsontheweb.net/22230531317.pdf
- http://rodisawikikofu.medianewsonline.com/gazoxolilusulagufipatojen.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://zagopemolal.rf.gd/audio_visual_aids_definition.pdf
- http://jitawidavez.atwebpages.com/6394886990.pdf
- https://uploads.strikinglycdn.com/files/5246fc8e-b9da-43dd-9d00-6feaec50b764/introduction_to_applied_linguistics_schmitt.pdf
- http://gabixemi.epizy.com/vixedanuz.pdf
- https://uploads.strikinglycdn.com/files/bf7b0c99-a5c8-4a1b-aa2c-3db4c6b5349f/char_broil_infrared_turkey_fryer_manual.pdf
- https://uploads.strikinglycdn.com/files/e2708ed6-b3da-4c29-94fe-1a5242a6ff4e/how_to_reset_water_softener_regeneration_time.pdf
- http://xamivopawotiw.epizy.com/school_absence_letter_due_to_fever.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f32d.bin` `94facc3aef11cf795cad1409ca138bceb1ecb56267f484434826e97338e4c172`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF32D	4964 bytes

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