PDF malware analysis — malicious · 70e0ab8f48a5b310

MALICIOUS

PDF

74.5 KB Created: 2021-03-28 15:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 914d15bd85cd758ecdb434ee86bcda71 SHA-1: 439e17745ae3baaab308ffc1a143e6e7c5bf529c SHA-256: 70e0ab8f48a5b310592a1ff616b236b1acd5d55f04c939f05c3c4c6c1ea4b5ff

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a malicious payload disguised as a software update like 'Adobe flash player 8 for mac'. The presence of this external URI and the overall detection strongly suggest a phishing attempt.

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/123?utm_term=adobe+flash+player+8+for+mac
- http://xemisudufi.iblogger.org/equipe_artisan.pdf
- http://fogugevup.22web.org/bellows_beach_report.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/mexesazaxasa/thich_nhat_hanh_meaning_of_life.pdf
- https://uploads.strikinglycdn.com/files/f3d73e13-df93-459d-a674-b240b0952427/vejexol.pdf
- https://s3.amazonaws.com/zoromexemuzid/35139394586.pdf
- https://uploads.strikinglycdn.com/files/c9df2a41-751e-4ac2-bd40-6e643cf9784f/91862057716.pdf
- https://s3.amazonaws.com/sorapobuk/83562012170.pdf
- https://uploads.strikinglycdn.com/files/7a4a6f8f-daa7-4e4a-becc-a0b1e8f93113/72978755112.pdf
- https://s3.amazonaws.com/ginutu/leberafogipumoxexu.pdf
- https://uploads.strikinglycdn.com/files/e867bd75-562c-45e5-be0c-a94ed0238f96/japowotunarovomofuxuk.pdf
- http://nesazovopiw.rf.gd/boohooman_jacket_size_guide.pdf
- http://negifunowulag.rf.gd/is_onyx_boox_safe.pdf
- https://uploads.strikinglycdn.com/files/1a113904-986c-46c6-bef4-d94bc5eb28d5/xuwudexiwoxoxopiduzebiwuv.pdf
- https://s3.amazonaws.com/nijudow/android_carplay_app.pdf
- http://nubijusumodas.rf.gd/algebra_1_midterm_cheat_sheet.pdf
- https://s3.amazonaws.com/kegubinefuda/81818803281.pdf
- https://uploads.strikinglycdn.com/files/dc720043-0973-4f31-ae3f-ac6e7c3a761b/gepasar.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_off0000e49a.bin` `85b39a412f28faca106e192b42a85e28ec3e697a59c2de31d4cb61d85615f325`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE49A	5820 bytes
`font_01_sfnt_off0000f847.bin` `b7595a5a55261ea5342d71d2e4329ac08650afc70b1d1c90a2cfe3e25b320dc0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF847	10696 bytes

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