PDF malware analysis — malicious · 5c8c8ef6520c629e

MALICIOUS

PDF

65.9 KB Created: 2020-11-09 22:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 6e1316a7f53f7720607f022a5a893ac5 SHA-1: 1f77cd41e89547192481535db48f4d7582c1c9a0 SHA-256: 5c8c8ef6520c629ed1d335e913d5e699b6a7cf9ed7a5e0727dd3a64e3764ccc1

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that mimics a search query, likely intended to trick the user into visiting a malicious site. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or credential harvesting 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://traffine.ru/123?keyword=psychosocial+moratorium+definition+psychology PDF link annotation
- https://cdn-cms.f-static.net/uploads/4366311/normal_5f9262057c007.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393193/normal_5f984c3e70f35.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373297/normal_5f8bd006e060d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369509/normal_5f8dbcdc306ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378628/normal_5f8e449029120.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402297/normal_5fa3c90463ece.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366348/normal_5f91f7b19c887.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374839/normal_5f8a768075002.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421354/normal_5fa17908bc0c3.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/livivuvuwugeb/94907079984.pdfIn PDF document text
- https://s3.amazonaws.com/fezenur/85744407904.pdfIn PDF document text
- https://s3.amazonaws.com/jemazejodep/bloody_games_unblocked_at_school.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_off0000c4d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4D4	5672 bytes
SHA-256: `e86443f8f4b67415d3446f3c196420f6dd344a02a9edf967f3b421865280a0df`
`font_01_sfnt_off0000d804.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD804	10252 bytes
SHA-256: `8688ff196e5c16150bea5af75ace45be35e651d8374d9abaa642283d9a352f7a`

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