PDF malware analysis — malicious · ad3cd29d8bd7ec55

MALICIOUS

PDF

39.9 KB Created: 2020-11-07 14:26:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 269dd1f4e3875433de610b01be51e580 SHA-1: 10bda1f9ba043a423e4983eccbdb3f861005ab22 SHA-256: ad3cd29d8bd7ec55317dcb1e16a92129768a6987ed7d84c9ccc9d01c1d5acd20

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=zip+code+for+savoonga In PDF document text
- https://cdn-cms.f-static.net/uploads/4365553/normal_5f9c4b4b39da2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386095/normal_5f906b5def8c9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369923/normal_5f88a7c099635.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374369/normal_5fa271d1f306c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417329/normal_5f9b95097f60a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378161/normal_5f913ef271432.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://balapep.files.wordpress.com/2020/11/tedefeku.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/720f4e1a-4b6e-4e61-92a9-a2ffa711b857/97638351209.pdfIn PDF document text
- https://nuroturexuwi.files.wordpress.com/2020/11/divinoja.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dcfaeb30-bea2-4e86-ab31-e073c96656dd/45068714027.pdfIn PDF document text
- https://s3.amazonaws.com/mipizaju/nivego.pdfIn PDF document text
- https://monirasuwa.files.wordpress.com/2020/11/33363284578.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_off00005ec0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5EC0	5308 bytes
SHA-256: `e4ec3541ca20b374649605d53d14a091d96d4df34b9d9d1e5d983c2225365e2f`
`font_01_sfnt_off000070ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70ED	9936 bytes
SHA-256: `30b20d63ea690e3367f4c83677eb85a2c689eba0172d325c6f387206a8e79092`

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