Malicious PDF — malware analysis report

Static analysis result for SHA-256 adea47109506aa0d…

MALICIOUS

PDF

44.2 KB Created: 2020-11-03 20:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2207f739d69e899bdf1482a9b65f7b0c SHA-1: 118f100e478c8ad478a15a1b0639ce64e9dbd25e SHA-256: adea47109506aa0dfc53ec18dc4c5435be4fda0c84ff64ffaebbcd92d76765e5
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/123?keyword=cloud+9+games+happy+wheels'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for 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://ttraff.ru/123?keyword=cloud+9+games+happy+wheels In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_5f9a3c323f9f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_5f93cf537ca43.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/zuxadol/burukufalupoxepoguvozi.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/dwarf_hamster_female_names.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/gm_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/142b925f-d47e-4314-86a4-ff23de67750e/el_reino_de_dios_y_su_justicia_guill.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/14355272178.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/fudulimojalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0743/3125/files/fowovel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a7e99ff-2ef7-402e-ab28-c8159bdbef6f/36547159843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d13992e-7536-4aff-b001-9e4120ed5de2/1301881704.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03485218-383f-400f-84c9-f845d1015821/the_sixty_six_laws_of_the_illuminati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1445/files/33626553883.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_off00006e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5F 5532 bytes
SHA-256: c267a485388d0009233cbbbad517b47d196f9d0d992f60152c730e457a680080
font_01_sfnt_off0000811e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811E 10316 bytes
SHA-256: 1db9b750e8ae0ad7a5c7122c4847c7da53050fbee85a166ff538e46952bf93c2

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