PDF malware analysis — malicious · d3751d9fe6e6b733

MALICIOUS

PDF

75.2 KB Created: 2021-01-11 14:50:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10

MD5: 3c4b8a93ab307e47995c5ae43f4d6a6b SHA-1: 239c019fce454e47e11ac9c9d423ec3fc2c6d6ab SHA-256: d3751d9fe6e6b7338a716011dfc1b94e1f1008e8379d5af757dfdda8cdad5399

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file, masquerading as a Dungeons & Dragons guide, contains an embedded URL that leads to a suspicious domain. ClamAV and ML classifiers strongly indicate maliciousness, likely for phishing or malware distribution. The PDF_URI heuristic points to the primary malicious URL, suggesting an attempt to redirect the user to a compromised site.

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://trafficel.ru/aws?utm_term=dungeons+dragons+game+master%2527+s+guide PDF link annotation
- https://static.s123-cdn-static.com/uploads/4481155/normal_5fc9463f1dcd2.pdfIn PDF document text
- https://cdn.sqhk.co/pegidago/w0icM0G/16964010373.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446789/normal_5ff990fb88fc3.pdfIn PDF document text
- https://cdn.sqhk.co/mawejoxejobe/hgtijfs/meeting_minutes_taking_template.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366344/normal_5fd2046519a12.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4401525/normal_5fcd631de7282.pdfIn PDF document text
- https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/5447ae9a72719.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410965/normal_5f9376fee22c1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372360/normal_5fb41155e1fdd.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fejififimaketo/numerical_expressions_worksheets_5th_grade.pdfIn PDF document text
- https://s3.amazonaws.com/bubodeliza/grammar_of_english.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ea3f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA3F	5144 bytes
SHA-256: `29cb14cc009696bb5ce7a90d6792a83e773fc2579f8b5ef646f94c6f0fd4a850`
`font_01_sfnt_off0000fbb7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBB7	10536 bytes
SHA-256: `2c9a9a693ddcb7de4a46fbe258296285811b5c69117dfefaa99e61fb51950a11`

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