PDF malware analysis — malicious · 05e9eddab79fe5d6

MALICIOUS

PDF

83.4 KB Created: 2021-03-22 04:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d4639ad59c5617df1821face04feeaf0 SHA-1: 6c68fae56b4d3fc017ca87c2e6b509c25243ab09 SHA-256: 05e9eddab79fe5d691b5c33908333d6186396b0fe1bab555c87a9fb62cdab1d8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or redirection scheme. The document body, though heavily obfuscated, appears to contain metadata related to search terms and PDF generation, suggesting a lure to a malicious website.

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://dafemum.ru/wix?keyword=craigslist+kansas+city
- https://static.s123-cdn-static.com/uploads/4373509/normal_5fcc0c5ac3aa7.pdf
- https://cdn.sqhk.co/vunelebu/idihNNr/kavupiduf.pdf
- https://cdn-cms.f-static.net/uploads/4379602/normal_6023f48e9915a.pdf
- http://dukafufuxona.iblogger.org/34253157700.pdf
- http://pazifelurup.medianewsonline.com/guwixatapuwopudelive.pdf
- https://cdn-cms.f-static.net/uploads/4420766/normal_6055340170853.pdf
- https://cdn.sqhk.co/mikitikotak/jic58Z2/mikecrack_diamantito_2_1_hora.pdf
- http://votixibutiro.medianewsonline.com/velibitot.pdf
- https://cdn.sqhk.co/zarepowake/UjhjjYu/modern_strike_online_pvp_fps_gameplay.pdf
- http://zokabuxekego.22web.org/hip_hop_greatest_hits_albums.pdf
- http://jurabosuw.22web.org/gobofalolobiwavakus.pdf
- https://cdn.sqhk.co/tesikotuk/bkjhWjh/7981188672.pdf
- https://cdn.sqhk.co/movumatoz/iigjwjj/airplane_crash_reports.pdf
- https://cdn-cms.f-static.net/uploads/4486982/normal_6023f646d5e8c.pdf
- http://tideboweped.medianewsonline.com/76024702053.pdf
- https://cdn-cms.f-static.net/uploads/4367621/normal_5fd6c66732671.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://duwazobikojuk.epizy.com/zivolanokonite.pdf
- http://lofoxos.epizy.com/adjetivos_indefinidos_en_frances.pdf
- https://s3.amazonaws.com/fukepez/87364994877.pdf
- https://s3.amazonaws.com/wujapu/alfred_group_piano_book_2.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_off00010797.bin` `dfb0e03de4e26f29dd216d9dc4385a14ff8cd0d175b0913c161ef5400aebec14`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10797	5036 bytes
`font_01_sfnt_off000118d1.bin` `0cb43a10b068b0cfcf3ea6a817909ccccfce800d40f004217af062ef10f0369a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118D1	11924 bytes

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