Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe569b8241640b69…

MALICIOUS

PDF

42.6 KB Created: 2020-09-19 07:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa31ea30e7811bc819903ee5e208fb92 SHA-1: dbea8691c1af23f5e0d431de30136e664a39ae7e SHA-256: fe569b8241640b69917b972739889a913a713f6fee10c89adc6754e74f46d542
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'middle school band'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.club/wix?keyword=still+middle+school+band
    • http://noruv.sunshinephotographys.com/uploads/1/3/0/7/130776131/2518916.pdf
    • http://files.superiormachineandfab.com/uploads/1/3/2/8/132815154/5810631.pdf
    • http://makezug.wimbornealliance.com/uploads/1/3/1/1/131163763/8851407.pdf
    • http://fizez.nbriding.com/uploads/1/3/1/6/131606349/getuzun_bupalu_nonurep.pdf
    • http://files.marzbanhealthandrehab.com/uploads/1/3/0/7/130775286/wibibuw.pdf
    • http://bibofurer.dfdoctorwho.com/uploads/1/3/0/7/130739072/zizufudu.pdf
    • http://files.mybrightwords.com/uploads/1/3/1/3/131379894/xevivuwuk-forodi.pdf
    • https://157db0c5-a5a4-4ca9-a38e-99e740f9d9cf.filesusr.com/ugd/97634b_366acb85bad047e5b68d4ec02ca5a5c1.pdf?index=true
    • https://4cac80c8-6e8f-4c57-a306-87edcce33628.filesusr.com/ugd/3f80ec_ddaf888bc87a48eca504af7daa35d8ab.pdf?index=true
    • https://993ff1fe-5ed7-4753-bedc-458909b1284b.filesusr.com/ugd/72b0e7_3fcf28a9c8654dfd9ba87f8c4bbb7e46.pdf?index=true
    • https://d70807b8-ae15-46c9-a4b6-c0fdcd4f3d92.filesusr.com/ugd/80fd5d_0a985257a0e14e6985f6c974722f79b5.pdf?index=true
    • https://01436684-e2e0-46ab-a561-7d0a594fa8c0.filesusr.com/ugd/72ed28_9bef8c7d612d490a972444f05e738d1e.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/jonenuxesoke.pdf
    • https://cdn.shopify.com/s/files/1/0437/6634/9975/files/journal_le_soir_d_algrie_en.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/chandrayaan_2_wallpaper_hd.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/wukelapigodeza.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6049/files/30141946020.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000675d.bin
17d4bf8886577d1cdc31bffcdc49912e09b42e37fd6f8fe22612c6d937e5616f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675D 5328 bytes
font_01_sfnt_off0000794d.bin
8f085614a094bba2e2b2fbf0202577de717cce2d0216811a503da71ababbc677		 pdf-font-stream PDF embedded font (sfnt) at offset 0x794D 10488 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.