Malicious PDF — malware analysis report

Static analysis result for SHA-256 441363ddbcc3b460…

MALICIOUS

PDF

44.6 KB Created: 2020-08-29 18:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b39772017e57dfaff0223cf71e16c5c0 SHA-1: 5f45fe082202d8ba87db2afc05fb9f5fdeede1fd SHA-256: 441363ddbcc3b4606622eecaa46f3c746ba9a60b3ae8c332d41b8b080b7212ca
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link to 'ttraff.com' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Pokemon soulsilver download pc', suggesting a lure to trick users into clicking the malicious link. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse to obscure the true malicious destination.

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.
  • 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.
  • 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=pokemon+soulsilver+download+pc
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/pdf_eenadu_telugu_news_epaper_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/4975/2478/files/pdf_pathophysiology_of_typhoid_fever.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/zowez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/operatoria_dental_barrancos_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/mivosaji.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b1e878f1dd7498dbc15d5241deaae83.pdf
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/computer_a_to_z_full_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/3511/3110/files/telecharger_catalogue_oriflame_avril_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/gafunev.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0151/files/zoxowumumipebimubolepupa.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/59918318625.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/factorio_rso_mod.pdf
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/reading_comprehension_exercises_intermediate_level_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/18978056070.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/7190584463.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_off00007050.bin
6d0f322fe071eecbd990f224eae038df8e0842241baf8b5b4b7a18fecd04c169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7050 5436 bytes
font_01_sfnt_off000082c9.bin
81bff30272f95aaad0cbe875f1fc7f402565935cd945270fbf34da44bdec3bc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C9 10164 bytes

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