PDF malware analysis — malicious · e0cc9eeda55a1448

MALICIOUS

PDF

77.0 KB Created: 2021-03-24 23:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 741bfda107892b10366060659d133f05 SHA-1: 02f63218ccff51be0e595bf999b236c8e10917f7 SHA-256: e0cc9eeda55a144882cc3c090339e26f52dae97c23b7aa46495097dcdbd9cc6c

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 phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to health information, aligning with common phishing tactics.

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://pelibifir.ru/123?utm_term=digestive+system+diseases+symptoms+and+treatment+pdf
- https://cdn-cms.f-static.net/uploads/4425501/normal_6037dfa62cb55.pdf
- https://cdn-cms.f-static.net/uploads/4370560/normal_60112ef74f3b3.pdf
- http://beautysss.site/relawevivoxitazanenereligtuycx.pdf
- http://erogan24.website/nordictrack_audiostrider_990_pro_specs9x1zy.pdf
- https://cdn-cms.f-static.net/uploads/4495055/normal_6040332faf992.pdf
- https://cdn-cms.f-static.net/uploads/4388181/normal_6042c11abb49f.pdf
- http://teplotronic.ru/88562582365tn160.pdf
- https://cdn-cms.f-static.net/uploads/4496828/normal_603c228ec40c8.pdf
- http://bukuxubujexa.22web.org/super_backup_app_free.pdf
- https://cdn-cms.f-static.net/uploads/4384839/normal_6041ce085ed16.pdf
- https://static.s123-cdn-static.com/uploads/4500887/normal_5fe048e34edd3.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gadumagabusodel/nutricion_enteral_y_parenteral_arenas.pdf
- https://s3.amazonaws.com/bezutu/48626411400.pdf
- https://s3.amazonaws.com/tanapilamaxi/fogepevuzoxok.pdf
- http://xelefufod.rf.gd/couch_potato_portfolio_performance.pdf
- https://s3.amazonaws.com/vedexajawo/allotropes_of_carbon_answers.pdf
- https://s3.amazonaws.com/lepefi/pirapugetufifowowev.pdf
- https://s3.amazonaws.com/zubuwujoxom/kenarofibasitewab.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_off0000eef9.bin` `9361f14071475d9468aba59dfd4c10d79317022fb6b40429ad84784fa8f53ab9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEF9	5492 bytes
`font_01_sfnt_off000101a7.bin` `3d0fe5b7f66d05bf0759fae3fa27afa8ec3e6def091f8aa312ffd465b1a1f243`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101A7	10744 bytes

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