Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc68e3b16c4bf4a…

MALICIOUS

PDF

41.2 KB Created: 2020-09-20 13:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14a163d246893e5262ee5f3ed222cbc5 SHA-1: ca9e53db58bcf19b51477483dd845191333ed3ae SHA-256: 0fc68e3b16c4bf4ae4dedb24b144bd8b85a055150d07f91b9a65c3bbaba87848
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with multiple embedded URLs, including a known malicious redirector at 'https://ttraff.me/wix?keyword=saitek+gaming+keyboard'. This suggests the document is designed to direct users to malicious infrastructure, likely for phishing or malware distribution. 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.me/wix?keyword=saitek+gaming+keyboard
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fb5f04dd-e572-46ad-b5f1-e90e3e025bfa.filesusr.com/ugd/501a20_9a23dada7a184deebab2082b965eb455.pdf?index=true
    • https://c69acded-daaa-45b7-b5f9-5bb618baa2f6.filesusr.com/ugd/0bfb20_3bfe4001dfbc4bea855cbe283c03dbb3.pdf?index=true
    • https://87c09e95-1858-4242-b2aa-b25d9622f031.filesusr.com/ugd/05e3ad_e89edbb2335b4851b683ee50f1e2002a.pdf?index=true
    • https://bbedf5b2-c9e9-45c1-9650-c8911394a5b8.filesusr.com/ugd/46bfb0_1304d6079531469bb9569d4f318b6468.pdf?index=true
    • https://7e7b301b-3cb4-4840-af8b-4f9e60c518f0.filesusr.com/ugd/df73ab_fe3e2a72b74a42828bb19f5ed2c21de7.pdf?index=true
    • https://5a895556-c9b0-4b82-910c-9b11f538c4c2.filesusr.com/ugd/7f16bd_79b0188b0ca24f499bf26869c373a158.pdf?index=true
    • https://f1ba278d-f611-463f-a180-9c9871f50c57.filesusr.com/ugd/2f7815_b05f0b5aea224336a82ec3d45743b24f.pdf?index=true
    • https://3ddc9841-49d2-4ff0-aab2-d36efcbed71d.filesusr.com/ugd/bba345_92db01aa39004b0589fc34118394a03e.pdf?index=true
    • https://930a850f-ec67-44b2-90b1-fa10e8961596.filesusr.com/ugd/4b874d_339590bb01154594b0c28285fa8e8165.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/5314/5495/files/32837124807.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/9284133315.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/37851844444.pdf
    • https://cdn.shopify.com/s/files/1/0432/6975/0940/files/5764764678.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/20366641235.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_off00006271.bin
66bcfb7488a2bf90b231d4333ba0a03958ca4b3720a41e3e1f400e2c63876192		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6271 5344 bytes
font_01_sfnt_off00007494.bin
37e486782a7eeb9f50429f4ccb971517a0d37223cebe5821b4e225df86597a1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7494 10408 bytes

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