Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a9f75473060036…

MALICIOUS

PDF

59.5 KB Created: 2020-08-30 23:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 437571a81facb2a2c27f8d751b76d18f SHA-1: 6732b7ea075eb0e39870744d4ccbe3faee7bbcec SHA-256: 96a9f7547306003623f7b116fed398b09bac3e5132a318533d42b14c94d8f530
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=definicion+de+conocimiento'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to trick the user into visiting this malicious site. The PDF also contains a large number of external links, indicating a link farm strategy.

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.cc/wix?keyword=definicion+de+conocimiento
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/calligraphy_and_hand_lettering_practice_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8542/files/jewixibumogikejegosefido.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/curriculum_vitae_samples_for_freshers.pdf
    • https://cdn.shopify.com/s/files/1/0441/3492/4440/files/87938505296.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59577082877.pdf
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/methods_of_solving_quadratic_equations.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/30212970542.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4172/files/bukibimuwalef.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/95059353266.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9766/files/first_to_one_game_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4204/files/vonezagobevenefifawuxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2334/2495/files/odometer_correction_software_for_android.pdf
    • https://static.usrfiles.com/ugd/b8c837_cec769a20d4b4e14ac8439ac311efde1.pdf
    • https://static.usrfiles.com/ugd/e42ee3_f380af83216748d1995bf61d0a411a76.pdf
    • https://static.usrfiles.com/ugd/04e6f9_9f15765bdbae4cf59e646e3efd77da3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_132eb013f89043e59db09a7000f93195.pdf
    • https://static.usrfiles.com/ugd/eaf48f_9c15168a767d4f42a198c2b94f362ffe.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_off0000abd4.bin
f0f0234a5172938143b4e8a069b07bce1118ca1f2207fe9aba1880da75883be8
pdf-font-stream PDF embedded font (sfnt) at offset 0xABD4 4652 bytes
font_01_sfnt_off0000bb9a.bin
3fa7eebc47d621bc8c3d413c92df61b9c03a54c75c7da59ed4f25eb506195d9c
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB9A 11040 bytes