PDF malware analysis — malicious · b7ed86ef4834e5fd

MALICIOUS

PDF

66.2 KB Created: 2020-12-25 01:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: ea0681bb0144a802560fd4a925a2fd49 SHA-1: ebe542fde937d226257f7b22248379cb7c8d9d6d SHA-256: b7ed86ef4834e5fd1777bb9636d0fdf05a6d5620300f50357bd9839fa9df519e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a phishing lure or further malware. The document body, though heavily obfuscated, contains text related to mobile plans, suggesting a social engineering pretext.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/strik?utm_term=u+mobile+postpaid+plan+2020+with+phone PDF link annotation
- https://cdn.sqhk.co/netesatova/jdgh4hd/birthday_cake_with_name_and_photo_edit.pdfIn PDF document text
- https://femuketidoxesi.weebly.com/uploads/1/3/3/9/133997502/5462738.pdfIn PDF document text
- https://cdn.sqhk.co/bidomutarili/jchaiel/umc_el_paso_salaries.pdfIn PDF document text
- https://vesogotupu.weebly.com/uploads/1/3/4/7/134702950/tanasufulodexawuz.pdfIn PDF document text
- https://muzuzudad.weebly.com/uploads/1/3/4/6/134614344/47a1b5f.pdfIn PDF document text
- https://sotezogurew.weebly.com/uploads/1/3/2/7/132740991/dagew.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/getizar/wukabalatigan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a073a522-42b0-4f69-a937-d48ce275e3bb/17696982176.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/01b36ef2-ec62-4174-b295-b0dd1812e555/96309497924.pdfIn PDF document text
- https://s3.amazonaws.com/divexikav/zijitudusememujadi.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_off0000c634.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC634	5600 bytes
SHA-256: `ed86a8c9faaa9d4a01c1ccb64d2f0efea9b01a0e01523ed24ac2ba44d7f32031`
`font_01_sfnt_off0000d925.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD925	10284 bytes
SHA-256: `c91951a29d2b56838828787c12490f6e9118bd81b8116310c7ccca1d96089557`

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