PDF malware analysis — malicious · 6fe3bd88ebfbc32d

MALICIOUS

PDF

47.4 KB Created: 2020-11-04 21:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: f1899e1b6994eb2002b1e09b4ff1d55a SHA-1: e4f2f530b0c1904047d737d6c8ce8a16b66cdfdb SHA-256: 6fe3bd88ebfbc32d8ffb79fede54101d68e57c4b8f88989cbbb693e0abfb14e3

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded URL suggest a malicious intent, likely related to phishing or malware delivery.

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://gettraff.ru/strik?keyword=ap+human+geo+study+guide+exam In PDF document text
- https://cdn-cms.f-static.net/uploads/4393503/normal_5f9e2b9812c95.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374957/normal_5f897a2477a57.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421472/normal_5f99f9fa8042d.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/tiluwisulepam/this_old_boat_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cf6a9d8b-b1ff-4d95-82af-7fe0c905669d/how_to_download_minecraft_maps_on_ps4_2019.pdfIn PDF document text
- https://s3.amazonaws.com/zonivezada/black_s_law_dictionary_2019.pdfIn PDF document text
- https://s3.amazonaws.com/degagaziv/42649392212.pdfIn PDF document text
- https://s3.amazonaws.com/samopakamefap/the_new_method.pdfIn PDF document text
- https://s3.amazonaws.com/popagexexoza/97714710616.pdfIn PDF document text
- https://s3.amazonaws.com/zuxime/misspelled_words_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/46654258848.pdfIn PDF document text
- https://s3.amazonaws.com/memul/vevirufewotom.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_off00007b35.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B35	5404 bytes
SHA-256: `8197c2f34ac0afdb02b7894238bc8d7bc3dbe5e9e8b2fc34adfcd7d913ca8e49`
`font_01_sfnt_off00008d7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D7E	10380 bytes
SHA-256: `52b5f724214b700d07f5a6b097f056c51cc80e042af8ced1c8d3d3559c0daf4b`

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