Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbac4159448a99a…

MALICIOUS

PDF

42.1 KB Created: 2020-08-17 00:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3d475659101eac385676493525abec0 SHA-1: ecc3a27656a1355694deadae2bdf2e2966120fb3 SHA-256: afbac4159448a99af92802b4963a681da5a8e158b5bde6cbdb5da26cfbdbcb8c
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=fundamental+of+stock+market+pdf, is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to the same URL, reinforcing the malicious intent. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=fundamental+of+stock+market+pdf
    • http://files.athanasios.co/uploads/1/3/2/6/132681033/xewemapawiri_kebomatapaf_lunug.pdf
    • http://files.inahollandaze.com/uploads/1/3/0/8/130874012/9741672.pdf
    • http://files.wekesa.net/uploads/1/3/2/6/132696598/e9678149de61d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/ios_command_line_interface.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/parkside_air_paint_spray_gunp_500_c3.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/99770545511.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7808/files/rig_veda_in_sanskrit_with_english_translation.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/razaji.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1685/files/kurire.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/dadojux.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/qemu_img_resize.pdf
    • https://cdn.shopify.com/s/files/1/0440/4094/5829/files/mamewovilikalawozis.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/conjunctions_worksheets_for_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/plasma_physics_by_bittencourt_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/writing_numbers_in_words_worksheets_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0459/1766/7477/files/marinabolimetogipozew.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_off0000647c.bin
5f631b56fe9c16bd4e1104076428d792d3769f03b7d6aca2865a608a6ba2fdba
pdf-font-stream PDF embedded font (sfnt) at offset 0x647C 5320 bytes
font_01_sfnt_off00007685.bin
430163d3436ba73e297627f6963be7315836153a11dc69a166aa45199d01e386
pdf-font-stream PDF embedded font (sfnt) at offset 0x7685 10872 bytes