Malicious PDF — malware analysis report

Static analysis result for SHA-256 36c008c367c3ecf0…

MALICIOUS

PDF

44.2 KB Created: 2020-11-01 05:18:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b9eeb20934e5ad33fc8b1068e146021a SHA-1: d7ea8858fdaaa06027ef9fe5d4092ae237692553 SHA-256: 36c008c367c3ecf0e7a8d660e4dbedeb7afdff4f25919c41493ba7310dc46c8e
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://gettraff.ru/strik?keyword=burrell+high+school+graduation+2020 In PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/7edd99027b0.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/3aa4ceddece7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377933/normal_5f8d0cc3ccb36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5f8d4b6f35741.pdfIn PDF document text
    • https://nonudefetug.weebly.com/uploads/1/3/4/3/134314303/9318819.pdfIn PDF document text
    • https://lamuvoraraxuz.weebly.com/uploads/1/3/4/4/134486612/rujido-jenixiriv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f89a2734f1b1.pdfIn PDF document text
    • https://xobesatiwum.weebly.com/uploads/1/3/4/3/134359431/9691576.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f87a0248fcaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443588/normal_5f9cad070e09b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f89014d226c7.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://cdn.shopify.com/s/files/1/0479/8237/9164/files/freeze_spell_range.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8189/1484/files/gunship_battle_mod_apk_house.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_off000060b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B7 5404 bytes
SHA-256: 827f7ee24d933369cf3d676838aacef56e14c21b3fa9249cc4b5dd1b3cc03af8
font_01_sfnt_off0000730c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730C 10284 bytes
SHA-256: dd168301b584676e71d7aeb76b254df6f72ead3d63f6739f0dcc9cecfa9ad569
font_02_sfnt_off00009637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9637 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3