Malicious PDF — malware analysis report

Static analysis result for SHA-256 f817fe2ffd4c74f7…

MALICIOUS

PDF

47.7 KB Created: 2020-08-19 18:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d24fac08573334fec963b96045d906c SHA-1: 96827c12f905a08c84d7a554ac18ed13505eedca SHA-256: f817fe2ffd4c74f7f196cb78a11755441e1e46cf9725315249df2ee8e7ee0dcb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=technology+assignment+agreement+template'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to direct users to malicious infrastructure under the guise of providing a template.

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=technology+assignment+agreement+template
    • http://juxomo.grahamedesigns.com/uploads/1/3/0/7/130739457/2780ba3.pdf
    • http://files.barkcultureco.com/uploads/1/3/1/0/131070674/bimigawepimok-xerajedudo-wadeliwevek-zixawidorofat.pdf
    • https://cdn.shopify.com/s/files/1/0437/5235/8039/files/wotlk_skinning_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/xunavatilalojepoxamekawi.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/cambridge_ielts_8.pdf
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/fisenizomowuwoxu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/fundamentals_of_biochemistry_voet_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8001/files/togujebikamuxexapekusijoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/my_house_free_mp3_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7818/files/advanced_computational_mathematics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/49682012160.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/losogefozaki.pdf
    • https://cdn.shopify.com/s/files/1/0448/7512/0807/files/ludokonasesefofufibameseg.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/49603833924.pdf
    • https://cdn.shopify.com/s/files/1/0438/4076/6109/files/22399459849.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/
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/xunavati

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d49.bin
69e65d1a7d81028540c267e0898e007067be68468048fd072dac9c53d8505955
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D49 5400 bytes
font_01_sfnt_off00008f81.bin
a3a53b3e304c20774be73892f0f3a8001260e4e61a4d5cb0b63af9b4b9f4830c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F81 10024 bytes