PDF malware analysis — malicious · 3ef36a8a3e25a11d

MALICIOUS

PDF

61.1 KB Created: 2021-02-14 23:27:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16

MD5: ef8caea20194e61cb6c4619358346f7c SHA-1: f82edaacc27ff659b2c87c55265e133871cdab47 SHA-256: 3ef36a8a3e25a11d80a7357127cc53606799d7cd5847e549fc687db749b11da4

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. The embedded URL, https://leonvi.ru/123?utm_term=growing+up+asian+in+america+analyzing+the+text+answers, suggests a phishing or redirection attempt. The document body, though heavily obfuscated, contains references to wkhtmltopdf and a date, potentially indicating a generated document used for malicious purposes.

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://leonvi.ru/123?utm_term=growing+up+asian+in+america+analyzing+the+text+answers PDF link annotation
- https://cdn-cms.f-static.net/uploads/4382962/normal_6016c5da2cdbf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459623/normal_5ffa13df84ae2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422893/normal_601e79749cbc3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494451/normal_5fdc1eae33949.pdfIn PDF document text
- https://xutativapejan.weebly.com/uploads/1/3/4/5/134521393/6ddf6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4492892/normal_6016748d58d9c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446382/normal_5fe4fc65a7995.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475719/normal_601ec33b3688c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388156/normal_5ff975d71058f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460688/normal_6020d290e395c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b356.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB356	5688 bytes
SHA-256: `9755dcedca6938b93e3a430a22c4ad1d28060ca20e0de08efe7c5843e8bf65cd`
`font_01_sfnt_off0000c6bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC6BF	9644 bytes
SHA-256: `e19b09a5cac34dc13ed5e1ce0db82725752847165789a306e062722aa01cf05c`

Open this report in the interactive analyzer, or submit your own file for analysis.