Malicious PDF — malware analysis report

Static analysis result for SHA-256 4675f5283adcc20a…

MALICIOUS

PDF

45.8 KB Created: 2020-08-25 18:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee78b46a841be0fd5cf43170b827a26 SHA-1: 5bd958f15077eb1f8b6e62a5fe400af73d26506e SHA-256: 4675f5283adcc20a97aa6902e771a0acfe9c9556f9c6cc0f5923d52ef43cf1bb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=carb+counting+chart+atkins'. This indicates a social engineering attempt to lure the user to a malicious site. The document also contains a large number of embedded links to external PDFs, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure the final malicious destination. 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/pify?keyword=carb+counting+chart+atkins
    • http://fiwotaz.escdu.org/uploads/1/3/1/6/131606227/fujupusakevu-zimujo.pdf
    • http://files.montanaredshed.com/uploads/1/3/1/3/131383478/74c70.pdf
    • http://selakitig.gaiusstandardpoodles.co.nz/uploads/1/3/1/8/131871796/lebanatizapobupaz.pdf
    • http://files.athleticadvantagellc.net/uploads/1/3/1/3/131383318/5c9f6881b.pdf
    • http://files.tradebikes.net/uploads/1/3/0/7/130775182/lowofabis_raxurekije_kuvajewujakefa_sijikipi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2550/files/80417667834.pdf
    • https://cdn.shopify.com/s/files/1/0437/6490/8181/files/missouri_river_fishing_report_sd.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/6893471161.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/public_finance_and_public_policy_fifth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/boogie_woogie_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0438/9735/6443/files/new_york_stock_exchange_holidays_2016.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/relegukosejimixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34993807018.pdf
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/vivevewidesilokidaxamov.pdf
    • https://cdn.shopify.com/s/files/1/0433/8948/5221/files/burger_bistro_centurion_menu_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/52268066545.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/57658429270.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_off0000752b.bin
c43b2f0e2e7bc45309061186ad955774e3569b2985ec95bcd7689fbb5276be67
pdf-font-stream PDF embedded font (sfnt) at offset 0x752B 5136 bytes
font_01_sfnt_off0000869b.bin
8fa7b55e76e0728511ae2c68b1bf1c796ebc176dd5a86e1c64501acbc2f9a9cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x869B 10384 bytes