PDF malware analysis — malicious · 7722b18909622652

MALICIOUS

PDF

70.1 KB Created: 2021-02-11 23:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 12bad4926535ac2b39ea6742da83a738 SHA-1: a8d95a836e782cb1556178f50c31da662921ca9f SHA-256: 7722b189096226525321fc323236d84a4d56e71ca9a857869890e8cadd040197

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://maypoin.ru/wix?keyword=pathfinder+kingmaker+beholder', which is likely a phishing lure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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://maypoin.ru/wix?keyword=pathfinder+kingmaker+beholder PDF link annotation
- https://static.s123-cdn-static.com/uploads/4494657/normal_5ffa52d785a79.pdfIn PDF document text
- https://cdn.sqhk.co/veleviziwew/cigeYjc/soravog.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427313/normal_602099bfa4e68.pdfIn PDF document text
- https://cdn.sqhk.co/jozanafe/d54iiid/pandemic_unemployment_runs_out.pdfIn PDF document text
- https://gomimujexewawid.weebly.com/uploads/1/3/1/0/131070583/dc79bb.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4482648/normal_5fcb04e469855.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4416144/normal_6006e911bd8c3.pdfIn PDF document text
- http://wavolat.iblogger.org/senior_management_job_interview_questions_and_answers.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368495/normal_601a4621c56d8.pdfIn PDF document text
- https://cdn.sqhk.co/gebitasixa/fgZeXhc/drum_machine_software_free_download_full_version.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413373/normal_601aea51a8fc6.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_off0000d60f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD60F	5348 bytes
SHA-256: `f2043e8e0f77e275bd7d1f0aeda7cac8ceec8dced8a78667b9019b7d67dfc94a`
`font_01_sfnt_off0000e817.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE817	9976 bytes
SHA-256: `cf574a6d4d097630c43904f7a1ba316038764dd93eb1c68183300e51640ebb91`

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