PDF malware analysis — malicious · a64a91f96f1abfcc

MALICIOUS

PDF

64.1 KB Created: 2021-03-15 06:08:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bb3c451bb113820120f8aefb21911fac SHA-1: 1f96d95d8a0ebc09160555a93a9885ef250bc3f9 SHA-256: a64a91f96f1abfcc5bb5e876060c93db482d2759998de64de77c66e50f3d6c8a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an external URI pointing to a suspicious domain, likely intended to deliver a payload or phish for credentials. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, aligning with spearphishing 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://vilenefex.ru/award?keyword=atalasoft+print+pdf
- http://straponartist.com/autocab_ghost_clienthnul5.pdf
- https://cdn.sqhk.co/pujixefan/ij7ja2p/circle_of_blood_arena_wow.pdf
- http://meetcabinets.xyz/how_money_works_the_facts_visually_explainedp905x.pdf
- https://cdn.sqhk.co/tumufiwusifo/ijggxQg/carpal_tunnel_exercises_nhs.pdf
- https://fazerirusabutef.weebly.com/uploads/1/3/1/3/131381144/278448.pdf
- https://zuxibonidape.weebly.com/uploads/1/3/4/8/134889984/8474912.pdf
- http://fatunatet.getenjoyment.net/isometric_graph_paper.pdf
- https://numetoximo.weebly.com/uploads/1/3/4/7/134717633/zepewol.pdf
- https://cdn-cms.f-static.net/uploads/4380867/normal_60385b48b9021.pdf
- https://cdn.sqhk.co/wujakegu/ihEbgg1/ralphs_hours_for_seniors.pdf
- https://zoparojo.weebly.com/uploads/1/3/4/7/134762662/1055793.pdf
- https://cdn-cms.f-static.net/uploads/4415768/normal_60361297846c5.pdf
- http://helpcenter.business/are_asus_graphics_cards_goodjtkes.pdf
- https://cdn.sqhk.co/zimidenex/cjBgCQL/26276809989.pdf
- http://raffle.website/michael_pollan_64_food_rules_lists3tk7.pdf
- https://kawapojironene.weebly.com/uploads/1/3/1/6/131637385/zuwonob_ruxexezaluvosu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://tujupifirafadus.myartsonline.com/characterization_worksheet_high_school.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_off0000bdf3.bin` `010b4a9c9c0ffdea3c8e9c2a7c5f652fd0699b5ccbfe7236409455c4e84d0bcb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBDF3	5024 bytes
`font_01_sfnt_off0000cf18.bin` `56635b7971a12bfda774b99100130de91fbd17704f8c0559d8977e80fa6fb018`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF18	10280 bytes

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