PDF malware analysis — malicious · 324bb044d3661798

MALICIOUS

PDF

89.8 KB Created: 2021-03-09 17:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3fb4ddbc3ba2183d3f1ba450328f654a SHA-1: dee9c2b852d38c12d79ae590305d129209f80222 SHA-256: 324bb044d3661798505ea30994a182b6e7fe20a2a12cfd1946f7ffc623c7c228

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to 'bottom bracket types pdf'. The presence of external URIs indicates an attempt to redirect the user to a potentially malicious site, likely for phishing or to download further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/123?utm_term=bottom+bracket+types+pdf
- https://cdn.sqhk.co/dusaradezat/iGhaJm7/fort_worth_bcycle_promo_code.pdf
- http://spiritstudio.ru/dufixazolupize43d9.pdf
- http://wersita.fun/nukutuwupudorasebobamj92f.pdf
- http://xukuvapama.iblogger.org/36508506886.pdf
- https://cdn-cms.f-static.net/uploads/4367650/normal_6014b1d851984.pdf
- http://jabilevij.mypressonline.com/finch_and_cotter_custom_constellation_map_poster.pdf
- https://cdn-cms.f-static.net/uploads/4472788/normal_600b9082e1f92.pdf
- http://midorezif.iblogger.org/xusegetopetunere.pdf
- https://cdn-cms.f-static.net/uploads/4386086/normal_5fd8fad45cadf.pdf
- http://supariwepexafat.mywebcommunity.org/dixopesimanebuzivulox.pdf
- http://fajufoturesu.sportsontheweb.net/faginojofupokavabusif.pdf
- https://cdn-cms.f-static.net/uploads/4410702/normal_600bca48dcd0a.pdf
- https://cdn.sqhk.co/kinibemazoz/WYTrBxD/bedoyecta_inyecciones_en_mexico.pdf
- https://cdn.sqhk.co/fumamimed/dPiiUjf/tunein_radio_live_sports_news_music_podcasts.pdf
- https://cdn.sqhk.co/jabosuve/kgciljb/beautiful_images_for_computer_background.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://demuremapinob.epizy.com/arby_s_canada_nutrition_information.pdf
- http://jebufipip.epizy.com/99406584364.pdf
- http://kotutuvotijol.rf.gd/chromatic_music_sheet.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_off00011ff6.bin` `5ebf0f78bc8202cd45bce1504d0b6b02568ca3decae62391f182d9c3044fec93`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11FF6	5624 bytes
`font_01_sfnt_off00013308.bin` `6dea5de0bfbca8528b1c8e8770abd9b2a71b65e22b4066af27da0fadae21de2d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13308	11940 bytes

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