PDF malware analysis — malicious · 39576e15c2b9d1bd

MALICIOUS

PDF

81.9 KB Created: 2021-01-08 09:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fb1aaa260253fd88046af8fddd965aa9 SHA-1: 7420fd863078a3794d7663fea967970045ed8cc2 SHA-256: 39576e15c2b9d1bde61abf312cce122cb2c4dd011d23501e341f4b3db5ead73a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a website disguised as an educational worksheet. This URL is likely used to host malicious content or redirect to a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/aws?utm_term=compound+interest+practice+worksheet
- https://zodekunomaxuj.weebly.com/uploads/1/3/0/7/130739112/1e5691bed16e3ee.pdf
- https://static.s123-cdn-static.com/uploads/4452862/normal_5ff2849c0fa7a.pdf
- https://cdn-cms.f-static.net/uploads/4376611/normal_5fa21d129940c.pdf
- https://cdn.sqhk.co/dalegoti/jayZMie/flippy_knife_download_pc.pdf
- https://cdn-cms.f-static.net/uploads/4415331/normal_5fb2ae96c97f5.pdf
- https://cdn-cms.f-static.net/uploads/4368758/normal_5fbad6f7b548a.pdf
- https://getenulezawo.weebly.com/uploads/1/3/4/8/134897364/vozitedilezoripafowa.pdf
- https://static.s123-cdn-static.com/uploads/4492593/normal_5fc9b9ddefab6.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/jesidofefe/teas_v_allied_health_study_guide.pdf
- https://s3.amazonaws.com/bojafazes/frp_bypass_apk_without_pc.pdf
- https://uploads.strikinglycdn.com/files/090074da-094c-4344-aa7e-3f490de21017/57853163480.pdf
- https://uploads.strikinglycdn.com/files/08e135d6-3d01-4c61-b019-e725471c3b5f/neuron_definition_science.pdf
- https://s3.amazonaws.com/dowesitobuga/android_one_mi_max_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
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ecdb.bin` `97860d4348dc40811282f1e5cc87dfd8f00a7c17cd119da1d13d763a250feac8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECDB	5340 bytes
`font_01_sfnt_off0000fee4.bin` `e20a3900202c8cbb957c9c983aa39a7c080a37198756c9bb14338939f25f4cc1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFEE4	10692 bytes
`font_02_sfnt_off0001239b.bin` `95f9e2ad69bd07c0712096e5bd8f1ad040601bc0fefc374b9cfe17ba4b65a8be`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1239B	16484 bytes

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