Malicious PDF — malware analysis report

Static analysis result for SHA-256 2250379167fc1ce4…

MALICIOUS

PDF

48.9 KB Created: 2020-11-05 23:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97cb72350cfd75ab63d2e990671dcc1a SHA-1: 934ec70841a6da708767947eb7e4b75f39fe796d SHA-256: 2250379167fc1ce41c4afa6d969583e06ccc6d55cfc0cada045463112b491a8d
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 harmful website. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded link suggest a malicious intent to redirect users to potentially malicious content.

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://ggtraff.ru/123?keyword=cde+2020+standards
    • https://cdn-cms.f-static.net/uploads/4410459/normal_5f96f4c2c29af.pdf
    • https://jomojakadawubo.weebly.com/uploads/1/3/4/4/134448567/limunemomofoni.pdf
    • https://murepofolod.weebly.com/uploads/1/3/4/4/134480544/vexizivavivite.pdf
    • https://gabamavipe.weebly.com/uploads/1/3/3/9/133999819/3e0d4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sugowubuf/bupedinewolajegurimoro.pdf
    • https://s3.amazonaws.com/mijedusovineti/12th_zoology_practical_manual.pdf
    • https://s3.amazonaws.com/sugaguxagu/bram_stoker_s_dracula_in_hindi.pdf
    • https://uploads.strikinglycdn.com/files/da78daa1-41f0-4f94-ac4d-2bb03fc27da2/sikorarosezun.pdf
    • https://uploads.strikinglycdn.com/files/67392b17-a3b0-4e78-b099-7e72a866095c/canned_banana_peppers_like_subway.pdf
    • https://s3.amazonaws.com/vutame/logistics_supply_chain_management_martin_christopher.pdf
    • https://s3.amazonaws.com/tetenifeme/12149385780.pdf
    • https://uploads.strikinglycdn.com/files/2ff80da0-aa42-4ba5-bd15-5ab0b8ed65ca/zixor.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008279.bin
bfd41b04c4cf2ab2eec8c8ae2f4246775af3d3302039e15b31b255724a27cad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8279 4964 bytes
font_01_sfnt_off0000935a.bin
d491f36ba690f45b87454b9ea8281e1f5a5733479786744a09fbb708a38da9e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x935A 10392 bytes

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