Malicious PDF — malware analysis report

Static analysis result for SHA-256 586c2b4529c54d1a…

MALICIOUS

PDF

64.0 KB Created: 2020-12-03 10:36:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 64de672731277161b4f64221dab519f0 SHA-1: 2d4a4cac2c2f439fa15fe61ee1151cd776f8ab27 SHA-256: 586c2b4529c54d1a755e726a0c06262335d1d3ede1952415cb4d29fbf4f3af35
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 0.9998

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?utm_term=capital+m+cursive+writing In PDF document text
    • https://rugotegejobaxus.weebly.com/uploads/1/3/4/7/134734811/7694627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479214/normal_5faa49078e6f1.pdfIn PDF document text
    • https://fenibelamej.weebly.com/uploads/1/3/4/4/134464240/suburere_nidebomowe_gelupa_tarutokuturab.pdfIn PDF document text
    • https://nafizanoride.weebly.com/uploads/1/3/4/5/134596231/daberajij.pdfIn PDF document text
    • https://pekesasopalono.weebly.com/uploads/1/3/4/5/134505129/fd829199a595.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ee2f16-6e0f-43f6-aedb-d69a67123b23/tavepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e485c5d7-3c6b-4aa8-928f-7dd08343b3aa/14108599408.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc016b9c30a162e0c4e17a3/t/5fc11a605147b148045afc09/1606490722290/coc_magic_s1_apk_download_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37e60a65-b543-4ee8-b7ac-96e41e9605de/wotanuxudadurapoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac2d4939-7562-49c8-bd57-22b001cf4ade/sutinogiwazapewizab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f62802e1-0e90-41f0-b041-021811f55d81/kotor_2_crafting_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f0f13d-20fd-447a-81fd-e5ad586f52db/race_and_epistemologies_of_ignorance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4f755f-fe96-46b0-9b84-148b2d4aac58/56617772342.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.

FilenameKindSourceSize
font_00_sfnt_off0000c03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC03C 5308 bytes
SHA-256: c687ac04b8d9a814ffe5209e5acaf8b952041fd814cdbbe0b64a5a17db5a7d9d
font_01_sfnt_off0000d243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD243 9728 bytes
SHA-256: 381d6ff633bcd1442b1910db9c0ead08cddb171c106c2f5aa2b7be3e30e7d59c