PDF malware analysis — malicious · defe09da4a8ad620

MALICIOUS

PDF

68.6 KB Created: 2020-12-04 05:01:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: e1d9ad4ca67519add141ed67c1d457d3 SHA-1: b15c23ba50bb5513de2cf606a772a41231383124 SHA-256: defe09da4a8ad62053b8e40ab0402c47afccde65fb963a4cf823d1ab0dfbd240

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/strik?utm_term=lesson+4-8+practice+b+curve+fitting+with+exponential+and+logarithmic+models PDF link annotation
- https://static.s123-cdn-static.com/uploads/4388824/normal_5fc7df99e302c.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/fizaxo/61521714501.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc707bf717a0f60c4010a14/t/5fc97df2e262c015945772fa/1607040499719/69161589926.pdfIn PDF document text
- https://s3.amazonaws.com/jamokaroxoj/39960766912.pdfIn PDF document text
- https://s3.amazonaws.com/robumuduluwise/20740805613.pdfIn PDF document text
- https://s3.amazonaws.com/wanasuvedigo/astm_a572_grade_50_standard.pdfIn PDF document text
- https://s3.amazonaws.com/vifusupegiza/us_history_regents_answers_june_2017.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/99832a9b-12d0-474c-be6c-2335fadf7103/trelia_simples_e_composta.pdfIn PDF document text
- https://s3.amazonaws.com/libowebujakux/nasajegewufevube.pdfIn PDF document text
- https://s3.amazonaws.com/bisegilupuf/dutapugedovowojanox.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c40468c7-a851-44e8-ae8c-4c45f8c75b25/25094229295.pdfIn PDF document text
- https://s3.amazonaws.com/pozokimepe/cessna_172sp_poh.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_off0000cb4c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB4C	6184 bytes
SHA-256: `1c9fac82ad42cd5251b8636e3f5c2f5d2ad57612ece85198028a28f12a04d148`
`font_01_sfnt_off0000e058.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE058	10876 bytes
SHA-256: `6190e93580b6ea14b64bd80fbdfc55108a179fb616ca2d7eae96d67bbb676359`

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