Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df011d59abf82c9…

MALICIOUS

PDF

82.6 KB Created: 2020-11-02 16:46:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ce59169dcb47a31032265037b74416a5 SHA-1: 65d12db9f2e83578c020f2ca9bf638182c6ad190 SHA-256: 6df011d59abf82c9eb881a39ab9b17eb0d461d7bcd38e13f88f20b4bb3a97108
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 malicious site. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is likely intended to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.link/123?keyword=what+system+is+used+to+classify+organisms In PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/pexejizerupox.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/29cce56f8fc85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_5f942ec26bfcd.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/dajuturep.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/2211748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f954c1a1e403.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/93eedbe0-9a3f-4e3b-9682-4b20f9b81ec8/61636530074.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1e68270-1a38-4937-9cbb-612e0cc6540f/99782090694.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/23117344856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eecaf54-5701-4f63-b5de-a66749c531a7/wofijibakoguloluma.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/seaplane_for_sale_florida.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56C 4220 bytes
SHA-256: 9587c36558c63e04d87e0b1c2b7e59da641bfc0b642cc671e2cb68388ad63e21
font_01_sfnt_off0000f463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF463 5432 bytes
SHA-256: 104b7b0e2d35a6f402a400a94277df9191d8fb8b60af17ef9269e600eaffad6f
font_02_sfnt_off000106c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C4 12112 bytes
SHA-256: 814b27874a400a389a55fa02e2636001e619e7712127c0525fcf7a3a9a8b0b1c
font_03_sfnt_off00012ec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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