PDF malware analysis — malicious · 4a83c2b7019ce91d

MALICIOUS

PDF

46.2 KB Created: 2020-11-02 20:31:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: a367ad68719a5d516331a8b36f6d6cf7 SHA-1: 74d3132e5cb436bcce44c358101fdc64393f8a1a SHA-256: 4a83c2b7019ce91dd5768768e786c94f7903494a2ab6f4fd5b24eaa3aec517f3

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised with a keyword related to the Moderna vaccine. This suggests a phishing or social engineering attempt to direct the user to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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://ttraff.cc/pify?keyword=moderna+vaccine+rna In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/6c589e58-c02f-4730-9bbe-5647d0973c28/xulutovepiz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b5d60b37-73ec-43da-aee7-480861e60a76/51365086050.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/631de742-4f23-4059-9d86-2babc2e34d8f/xivuwawe.pdfIn PDF document text
- https://s3.amazonaws.com/ditiruz/equality_act_2006.pdfIn PDF document text
- https://s3.amazonaws.com/bevekizadoxuj/kawipadepodototaxepupadig.pdfIn PDF document text
- https://s3.amazonaws.com/jadere/saxesebeferuridotelifuni.pdfIn PDF document text
- https://s3.amazonaws.com/xezujuxoz/factores_de_riesgo_para_atonia_uterina.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0505/1370/7179/files/35755111324.pdfIn PDF document text
- https://s3.amazonaws.com/xifabilejilab/medutolor.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000699e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x699E	4496 bytes
SHA-256: `5dd868272052d901dba822952fba62792774e006ff378bf6597f5fd89dab46a5`
`font_01_sfnt_off000078ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78EA	11112 bytes
SHA-256: `0375a669aa3cc8c4d0e009f0c0d17379188ef1632d94bf574f55a8a5a198645a`
`font_02_sfnt_off00009e73.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E73	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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