PDF malware analysis — malicious · 99efcc3827a7c17b

MALICIOUS

PDF

67.4 KB Created: 2020-12-17 00:07:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: a1a098a4cee3b25702702403a5e21f75 SHA-1: 1c74f6b059e3f99b5dcc4da380441f14657014de SHA-256: 99efcc3827a7c17b49dc5e64b4cb9c7940387053e2c5811aae9a451ef4b00ce7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, contains keywords related to damage, reinforcing the phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://trafffe.ru/123?utm_term=synonym+for+malicious+damage PDF link annotation
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/megelugik/noxanilatafe.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/9632625501.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc5b2f8c30a162e0c735f4a/t/5fc69c299ee0f32b873c5ccc/1606851626183/80780963688.pdfIn PDF document text
- https://s3.amazonaws.com/poguvelefa/itr_5_form_acknowledgement_2019-_20.pdfIn PDF document text
- https://s3.amazonaws.com/sojaxub/autodesk_alias.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc52a78df132613bbd94fd8/t/5fc7dee212b0cc77974560c1/1606934243581/65958646419.pdfIn PDF document text
- https://s3.amazonaws.com/kisagoz/bally_bally_full_song.pdfIn PDF document text
- https://s3.amazonaws.com/towutoginadivu/ap_physics_notes.pdfIn PDF document text
- https://s3.amazonaws.com/fewunadupop/biographical_statement_gov.pdfIn PDF document text
- https://s3.amazonaws.com/dugibabafod/badoo_premium_gratis_2018_apk.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000bd75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBD75	2972 bytes
SHA-256: `58d57dbf1cce936347ca7471b2ff1814838416484fbea0fdd6c82954352fee64`
`font_01_sfnt_off0000c81d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC81D	5548 bytes
SHA-256: `f22f2c97b4c44d8cd618a03964fc5a65685689bf92a9e09f8b4a6e010b23bf8f`
`font_02_sfnt_off0000daec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAEC	11056 bytes
SHA-256: `6b82fa72bbd843b65e1b8925cd33845f68f6adb748b070c6c86392ef74bd39cd`

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