PDF malware analysis — malicious · 515558225b7d7d7c

MALICIOUS

PDF

63.3 KB Created: 2020-11-10 07:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: a692519536b2909bea7607ce4c578631 SHA-1: 776a288c30d7e6307cf139f33762f7b1a2835b76 SHA-256: 515558225b7d7d7cf907254394bffed914af558799412b1f390da61a415d34b4

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL suggests a lure for downloading a lease agreement, which is a common tactic for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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/123?keyword=free+download+lease+agreement+form+for+free PDF link annotation
- https://cdn-cms.f-static.net/uploads/4420449/normal_5fa05df521455.pdfIn PDF document text
- https://kijadixuzot.weebly.com/uploads/1/3/4/5/134585523/xesurumasibujow.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390996/normal_5f94f6a737099.pdfIn PDF document text
- https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/buwasegagope.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367922/normal_5f8a6b266a371.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/ccd51438-6bc8-4ea4-a8c9-a9030b0fb715/zojusavan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ee51f7ba-11cd-4139-b526-5e3b3b1a50af/govazerobo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2a81a84b-4ce5-4abd-b28f-1fb5d6cfe04e/44833064334.pdfIn PDF document text
- https://s3.amazonaws.com/voxipanovigepiv/wen_wood_lathe.pdfIn PDF document text
- https://s3.amazonaws.com/lakadutof/70110268352.pdfIn PDF document text
- https://s3.amazonaws.com/mesixadelomomo/fateroxomarerajekizid.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_off0000bfc6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBFC6	5272 bytes
SHA-256: `ea7310796bc5115c56831a7a1f23d0acf6843442d15c2da5e2dc0c2ab0367b76`
`font_01_sfnt_off0000d1b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD1B6	9112 bytes
SHA-256: `15b0892c98bf01acbf8810a89b5b83054a673c119becf15a11fc9c83e6af79d3`

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