Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca29bf30acee0166…

MALICIOUS

PDF

38.6 KB Created: 2020-10-30 22:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d2de31b32915bf2d653fb3d4957f876 SHA-1: 722243f2e01b156ff5c4a04d99d5a582e745164b SHA-256: ca29bf30acee016659ce9b8b4991d0d9f25a86b84c6259052e81062fd72f4cb1
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ggtraff.ru/123?keyword=clark+creative+education+answer+key+csi' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of malicious links suggest an attempt to lure the user to a compromised site, likely for further exploitation or phishing.

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=clark+creative+education+answer+key+csi
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/bbd5d00acb4ff1a.pdf
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/71731b3347bb.pdf
    • https://pirovosarelivo.weebly.com/uploads/1/3/1/4/131406751/rorofexi.pdf
    • https://gujibimusexuwub.weebly.com/uploads/1/3/4/0/134042380/narajupaxiroxexo.pdf
    • https://cdn-cms.f-static.net/uploads/4418383/normal_5f985b8575674.pdf
    • https://xirugavo.weebly.com/uploads/1/3/4/3/134337246/gevev.pdf
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f871a94582bb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ropuba/taiwan_railway_map.pdf
    • https://cdn.shopify.com/s/files/1/0504/3011/6014/files/54425528682.pdf
    • https://cdn.shopify.com/s/files/1/0504/6127/8383/files/queen_radio_gaga_piano.pdf
    • https://cdn.shopify.com/s/files/1/0268/7293/8676/files/resanolor.pdf
    • https://s3.amazonaws.com/tenunud/plant_the_tiny_seed_book.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_off00005417.bin
14400029e38c5526c99300d7c0dbfff1987ade69282f45ea8f234ed536ab1424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5417 5156 bytes
font_01_sfnt_off000065c6.bin
f66fe0720b99fb628dbb9510b2933923b6af3b8f8376309cd58563632df22877		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C6 11868 bytes

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