PDF malware analysis — malicious · b246bf28c66d2ae3

MALICIOUS

PDF

76.9 KB Created: 2021-03-03 20:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 960fad8062f5614daffee3de621af415 SHA-1: eeaef4dbc6a952ff636db8a7c60f8c0b353a4f3d SHA-256: b246bf28c66d2ae3075fc335e18f237b9b430377852b86e13986183b033cf525

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users by redirecting them to malicious content.

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/wix?keyword=summarizing+and+paraphrasing+worksheets+with+answers
- https://cdn-cms.f-static.net/uploads/4464301/normal_5fd0e2de57e5b.pdf
- https://cdn-cms.f-static.net/uploads/4418565/normal_6009d4f82812c.pdf
- https://cdn.sqhk.co/burajugi/ii4IZeu/88077840990.pdf
- https://static.s123-cdn-static.com/uploads/4460982/normal_5ff44acb68bda.pdf
- http://ronifibofizet.medianewsonline.com/ncis_the_river_styx_part_2_recap.pdf
- https://static.s123-cdn-static.com/uploads/4466161/normal_5fcd30df83b0b.pdf
- https://cdn.sqhk.co/ravusigi/ghbhejc/vulesa.pdf
- https://cdn.sqhk.co/ninulekuto/KhhgcAa/jikakowisirom.pdf
- http://nakalabaxis.mywebcommunity.org/fawakufivopanetaruvajar.pdf
- http://vomamafawib.scienceontheweb.net/how_many_points_is_scrabble_worth.pdf
- http://fukuzowi.sportsontheweb.net/mapagu.pdf
- https://cdn-cms.f-static.net/uploads/4392193/normal_5fe851b75e343.pdf
- https://cdn.sqhk.co/viwiratoposu/xjdyihn/top_100_pop_punk_songs_of_all_time.pdf
- https://static.s123-cdn-static.com/uploads/4494889/normal_5ff4cd5fac18b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://valupakukav.myartsonline.com/lorenekaforuvezugasetetub.pdf
- http://tugojan.rf.gd/snapper_lawn_mower_replacement_tires.pdf
- http://kewupuz.rf.gd/domafetarowimaxagijurema.pdf
- http://lunurubu.rf.gd/25871833800.pdf
- http://vubapapi.epizy.com/65666497774.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_off0000efee.bin` `3dcb399f615b2421483da1ab002d1374b84102298d13b200e1bf632419110c48`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEFEE	5648 bytes
`font_01_sfnt_off00010311.bin` `43c2c97ab2dbe2a3063dcda8b37e784292090a42a427935dfa71e4456827743e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10311	10328 bytes

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