Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ef4a8c718b4e3f…

MALICIOUS

PDF

39.4 KB Created: 2020-08-23 16:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 429fbfeac3fbb4612df93d5d933e34bd SHA-1: d367079d1e88f328f57fa7b46997a7fbe6feda95 SHA-256: f9ef4a8c718b4e3fae1555422758e10a1fa83fdc7c92894e3cbbfae0a012c497
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One of these links, 'https://ttraff.com/pify?keyword=platform+1+cafe+ormond+menu', is identified as a malicious redirector. The document body is heavily obfuscated but contains references to the redirector URL and several other PDF files hosted on Shopify. This suggests the primary goal is to redirect the user to malicious infrastructure via the ttraff.com domain.

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/pify?keyword=platform+1+cafe+ormond+menu
    • http://files.twigflowers.online/uploads/1/3/1/8/131857920/gojazikifi_figebujisufa_nitajake_zopipeb.pdf
    • http://files.loavesandpiles.com/uploads/1/3/1/4/131437822/8913818.pdf
    • http://files.forgottensheep.net/uploads/1/3/1/1/131164567/kowezinu-jujubobevaxavu-widudalofupison-savoxejuga.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/haggard_crossword_puzzle_answer.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6630/files/tetodejeto.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/download_teks_sholawat_burdah.pdf
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/classic_wow_lucky_charm.pdf
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/dyson_dc50_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/6980/9575/files/feloposezegetomeliwudeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/6012/6118/files/10985002287.pdf
    • https://cdn.shopify.com/s/files/1/0448/1266/4989/files/microsoft_office_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3117/4039/files/67393488668.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_off00005cc0.bin
38c107368dcc5f62b291b140d8cefbbd41eb9bda077f43a8946ad2d1b0828c3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC0 5044 bytes
font_01_sfnt_off00006dca.bin
47fc4f455b6f08ec239658e6a99d9146e93e82af099dafae05d823dbe58815e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCA 10288 bytes

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