PDF malware analysis — malicious · 18d78441ca9cc552

MALICIOUS

PDF

43.7 KB Created: 2020-11-08 16:12:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: be6bbd37813af102f1838081b9d5b9bf SHA-1: bc4b51b117cfff53630d69c01fbbc9e96f6b9962 SHA-256: 18d78441ca9cc5525a948a1320a4fa6f869a2cbfdf0d1542ec505e442f4ee261

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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://traffmen.ru/123?keyword=dark+mantle+questline In PDF document text
- https://cdn-cms.f-static.net/uploads/4368740/normal_5f9a737ed8022.pdfIn PDF document text
- https://zijubanefim.weebly.com/uploads/1/3/4/3/134349059/fomajisitubuzed_jabovenekefosu_rorutun.pdfIn PDF document text
- https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/4863490.pdfIn PDF document text
- https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/xopevu_vilugarokobijos_fimorekon.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375894/normal_5fa7f3a3d22a9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370267/normal_5f8a705a2d445.pdfIn PDF document text
- https://rezivunafotete.weebly.com/uploads/1/3/4/3/134354631/zomiraxejiz.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/9f064524-d825-4f22-928b-150e1a6abb81/acs_organic_chemistry_exam_answer_key.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3213271f-c22c-4bfc-ba51-6887a1db92f1/gozoti.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/tipatodipezuniranilobil.pdfIn PDF document text
- https://s3.amazonaws.com/fizup/english_grammar_basic_notes.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_off00006d3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D3A	5020 bytes
SHA-256: `ff6801debeee80c1c06c5b28f3668f444aaf9d734c87d5fc2eb3a46ecdbaa4d8`
`font_01_sfnt_off00007e3f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E3F	10624 bytes
SHA-256: `d44d8a1b34535a2471fc5347225e60a37810e186fbfaac8ed4fb9fadb62365e8`

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