PDF malware analysis — malicious · f3d4d57b5066a232

MALICIOUS

PDF

71.9 KB Created: 2020-12-19 19:03:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: e72ef61c033614258d698a87552912c1 SHA-1: 193f3ebcd198233ab178991dc02e0f0ceb0e410a SHA-256: f3d4d57b5066a232ddba956dfdb350b90f7b159b9b01b9dab5c62834af18505b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to a "Guardian technology component", likely intended to trick the user into visiting the malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9967

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://trafficel.ru/strik?utm_term=guardian+technology+component PDF link annotation
- https://cdn-cms.f-static.net/uploads/4374682/normal_5fb2c788e7d58.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425010/normal_5f973e7c074ee.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/tutasujal/cg_vyapam_admit_card_2019_ppht.pdfIn PDF document text
- https://s3.amazonaws.com/woberiz/arousal_template_test.pdfIn PDF document text
- https://s3.amazonaws.com/sowewazulejewi/atv_repair_manuals_online.pdfIn PDF document text
- https://s3.amazonaws.com/xesigeze/alzheimer_s_dementia_symptoms_tracker_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3b61c697-4f28-4e3f-adae-0bd8c78bc43a/mokek.pdfIn PDF document text
- https://s3.amazonaws.com/jinabom/schwinn_manuals.pdfIn PDF document text
- https://s3.amazonaws.com/pazatuv/lexique_developpement_informatique.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_off0000d024.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD024	5324 bytes
SHA-256: `acc0866548ada9d7fb2bbf7edf71e6c4b26de126fef3bb564d71a27365fe9380`
`font_01_sfnt_off0000e21a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE21A	10116 bytes
SHA-256: `352134a33b69d54c546987158fbaabab5f75b33761820f3c4df5258cc5f34cef`
`font_02_sfnt_off0001049f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1049F	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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