Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de49da3d823c8c5…

MALICIOUS

PDF

55.1 KB Created: 2020-11-06 07:41:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d81c15b35040f9c880dc0c0239f913e2 SHA-1: 16247894a9a0c3eb35ee6a1c1254e280e27670da SHA-256: 0de49da3d823c8c54cdbec2dbe4d0dc6c2271b580cfa70d6b6b70d69e8c35311
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, traffmen.ru, which is likely used to deliver a second-stage payload. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The ML classifier also strongly indicated maliciousness.

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/strik?keyword=how+to+install+script+extender+for+oblivion In PDF document text
    • https://migirebunimalab.weebly.com/uploads/1/3/1/3/131383914/2271262.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/4205046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379034/normal_5f8cff549e91e.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/xogazuvazoxo-nufonopisidu-sadisinajudux-wagabilezamuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410952/normal_5f994776185e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_5f9ceeabae1ee.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn 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/deeacf5f-a798-4198-9713-ca1084d82a02/7827768456.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/tilijisapovulam.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/15620245958.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.

FilenameKindSourceSize
font_00_sfnt_off00008751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8751 5260 bytes
SHA-256: 47b489a4311c584b281b8fddfe5008e132d48da1852c68dea1ddc1b383a6babd
font_01_sfnt_off00009948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9948 11696 bytes
SHA-256: 22c8f8381c6bc6bf8b7f9b79780159470d50c97302b15920246679579d5c8180
font_02_sfnt_off0000c0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0FA 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230