PDF malware analysis — malicious · c498854e96797de9

MALICIOUS

PDF

76.2 KB Created: 2021-02-16 02:56:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9a898e3eddf2b2dc560d6c4cffee95b2 SHA-1: d9e06f2d80d67504a1832a31e8a8af7902c6d814 SHA-256: c498854e96797de99b70065de0c8773748a5fb8e6e3b1c231fedfe4e1ea8b16c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to educational materials.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://seumenha.ru/strik?utm_term=realidades+2+capitulo+1a+practice+workbook+1a-7+answers
- http://healthytrands.com/punidosx452f.pdf
- https://cdn-cms.f-static.net/uploads/4370525/normal_60283240a8737.pdf
- http://wuzubofetaxoger.iblogger.org/conservation_of_mass_worksheet.pdf
- https://static.s123-cdn-static.com/uploads/4417675/normal_60098e13237dc.pdf
- https://jefilixepiras.weebly.com/uploads/1/3/2/6/132681342/ea5b23012e.pdf
- http://futup.ru/67610386507jyma5.pdf
- https://pibigetikuke.weebly.com/uploads/1/3/5/3/135387636/8601378.pdf
- https://static.s123-cdn-static.com/uploads/4450884/normal_5fcdada15203b.pdf
- https://cdn-cms.f-static.net/uploads/4492259/normal_6014509002c64.pdf
- http://uablog.website/games_to_play_online_without_ing9klhw.pdf
- https://static.s123-cdn-static.com/uploads/4420222/normal_5ffa1691385ec.pdf
- https://fuzipoxo.weebly.com/uploads/1/3/0/8/130873840/5837913.pdf
- http://hookup757.fun/xulimenuvepaak48a.pdf
- https://roriwemako.weebly.com/uploads/1/3/4/5/134599113/3a7f7.pdf
- https://static.s123-cdn-static.com/uploads/4410199/normal_5ff2e239c03d0.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://piselobetozojo.rf.gd/android_bottom_navigation_bar_example_kotlin.pdf
- https://s3.amazonaws.com/dutuzanob/corporate_office_properties_trust_annual_report_2018.pdf
- https://s3.amazonaws.com/viboxikuz/wowizafojawekozo.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_off0000e821.bin` `afdf7d118820a6d839d546d264a1bd4e8e4af638e0052ba7bc4665aa69ad64af`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE821	5668 bytes
`font_01_sfnt_off0000fb9d.bin` `ca9b95995b2aa98313f905475c44fde207bb0685188c02037550585c679b9f75`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB9D	11208 bytes

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