Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf7f4795d220b8a…

MALICIOUS

PDF

42.2 KB Created: 2020-08-30 10:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93e5f3f837fcb3f659882c5e818151b5 SHA-1: e9e3a7eb9cb00c5e5a90f9c748e9fac82c62f7fe SHA-256: ddf7f4795d220b8ad9dfcb2f84483d069c554169169e00cc0404faf1444f5ff1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary redirector URL is `https://ttraff.me/wix?keyword=las+cuatro+estaciones+colecci%25C3%25B3n+de+cuentos%2529`. This suggests the document is designed to lure users to malicious sites, likely for further exploitation or credential harvesting.

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.me/wix?keyword=las+cuatro+estaciones+colecci%25C3%25B3n+de+cuentos%2529
    • https://cdn.shopify.com/s/files/1/0433/7526/3898/files/bevuzizugegowiriwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/kubam.pdf
    • https://cdn.shopify.com/s/files/1/0430/7563/3306/files/jitituvemebudijonirori.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/artificial_intelligence_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4436/3678/files/75280330984.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2728/files/ensayo_sobre_el_alcoholismo.pdf
    • https://static.usrfiles.com/ugd/4ae4db_af3e0c6e85ba44f5a09e448415f6fa21.pdf
    • https://static.usrfiles.com/ugd/2813e2_5927cb5c69af4535871b695d158f67e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_efab7b681d9a43dfa11e5b6b10af5f43.pdf
    • https://static.usrfiles.com/ugd/538d67_42757d944f0b453898e477cf2d8125fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fea06aa38c4ce8bc87f5a3bba3301c.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/masalin.pdf
    • https://cdn.shopify.com/s/files/1/0428/1742/1479/files/livididuwatam.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0406/files/public_relations_strategies_and_tactics_11th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/jewugijidukutitikuwaz.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_off000065db.bin
0d51470b68f1cf6e493e66091e318dd29aa30575bce224e60933259093c2f2d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DB 5088 bytes
font_01_sfnt_off000076f4.bin
1e87a73c238e9dac66c168f47101b0cd53a955d357a75cebbea4b9d9bfe3491c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F4 10564 bytes

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