Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1c5f6c00a00b0f…

MALICIOUS

PDF

44.1 KB Created: 2020-09-01 03:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bfb4cd820afff8b65cf8daf60f4b2f8 SHA-1: 41ebe90e9acc4c0e8d67621314d8a6cd4d7d55c5 SHA-256: 0b1c5f6c00a00b0f984b3af5f2103f7fadb7559648c07c40faa3df6816dc0c9b
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary redirector URL being https://ttraff.com/wix?keyword=what+is+the+template+strand+of+gene. This heuristic firing, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users to potentially harmful content. The document body itself is heavily obfuscated but contains the same redirector URL and numerous other Shopify links, suggesting an SEO spam or link farm tactic.

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.com/wix?keyword=what+is+the+template+strand+of+gene
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/6735/7846/files/zufoziguven.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/70272517500.pdf
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/73328425524.pdf
    • https://cdn.shopify.com/s/files/1/0434/1612/5590/files/zalozepon.pdf
    • https://cdn.shopify.com/s/files/1/0436/1938/5502/files/73539274121.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffaf3c61f6b24b06917941de46807d89.pdf
    • https://static.usrfiles.com/ugd/5899d5_1c0783d5437641e59d8175cc4a090dc8.pdf
    • https://static.usrfiles.com/ugd/902d29_a3b36b4ff1114a5e8d1a79bf96ede898.pdf
    • https://static.usrfiles.com/ugd/8b4172_1b48fda6350b452190e86cf0f783a0ba.pdf
    • https://static.usrfiles.com/ugd/9219f8_bfab242523de44c5a04612bc8d20ce4c.pdf
    • https://static.usrfiles.com/ugd/fd3290_50e6d70c8f794ab3a1b01e52b975a334.pdf
    • https://static.usrfiles.com/ugd/4c76bf_a8f9ba2b6d4d4e299803d8d9466eed9e.pdf
    • https://static.usrfiles.com/ugd/99a8f2_0405e974f5a1414eb53da99b83fc826d.pdf
    • https://static.usrfiles.com/ugd/4dd980_491e8a4f8b6e431aa3ce31f8902df8d9.pdf
    • https://static.usrfiles.com/ugd/3aee12_31194a95ac8344d8bcac5c57cd95e17f.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000604f.bin
53deebac19fd7dc91af151f681dd061d58eb2fc67dbac752e7bc2cf432a8ce61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 5256 bytes
font_01_sfnt_off00007210.bin
d6a4fef035464c9ca9c201bf9ab603cf15fc0996bea9668f092f2219ee9b7f3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7210 10272 bytes
font_02_sfnt_off0000953b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x953B 4324 bytes

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