Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f1e655ba8b7fbf…

MALICIOUS

PDF

33.9 KB Created: 2020-08-30 12:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6db499f3af18b27e9b4994931177fee3 SHA-1: bfc3e04ad14fc1cfafaea6a2957dd4899b23190a SHA-256: 92f1e655ba8b7fbf9211ecc97f0b6a82424c3da4c290b7490c52d6217158972f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a large number of embedded links, a common technique for SEO poisoning and redirecting users to malicious sites. One of the extracted URLs, https://ttraff.com/wix?keyword=free+eroctic+videos, is flagged as a known malicious redirector. The document body is heavily obfuscated but contains this URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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=free+eroctic+videos
    • https://static.usrfiles.com/ugd/913720_c2969b3b84c84a64bcffdf1943458b44.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b0c942838774af2964df5ff3177f97c.pdf
    • https://static.usrfiles.com/ugd/ab922d_175fd70975c248b0a6d261d2246512cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_994f233a8f7142e2aa9eb3e797c90b38.pdf
    • https://static.usrfiles.com/ugd/b8c837_439cb3377941494f903a4dad124ae329.pdf
    • https://cdn.shopify.com/s/files/1/0436/1935/2740/files/how_to_install_ipa_on_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/christmas_lights_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/b_tech_1st_year_books_download.pdf
    • https://static.usrfiles.com/ugd/565485_c76f6a0319644c82a186035a02d94b50.pdf
    • https://static.usrfiles.com/ugd/19103d_021b0b22c4ec4b4da622782b42e7f05d.pdf
    • https://static.usrfiles.com/ugd/8ba634_659e48e11af244f48b007726c84e9981.pdf
    • https://static.usrfiles.com/ugd/ade4e6_a5ef5b58582d4ea59f58753099eadeb6.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9146/files/42819665487.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/big_carding_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/0978/4482/files/91441878140.pdf
    • https://cdn.shopify.com/s/files/1/0439/2956/7387/files/mufunefavunaxusagak.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_off0000492a.bin
24a6ba60797d91005398cc20ea375c789f0e147b659ceab1c167a6ee9de23fb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x492A 4704 bytes
font_01_sfnt_off00005941.bin
eb5a69bff8d82ee9cb9337637d9f34d5f44fb9a9cc789a9e7455d075759242c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5941 9888 bytes

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