Malicious PDF — malware analysis report

Static analysis result for SHA-256 3608a68efdcc6576…

MALICIOUS

PDF

45.6 KB Created: 2020-08-29 06:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5151a12cd54cc045a9c0648d6f4d62ae SHA-1: 472c5d0e5cf93fc4beafe01ac757f729b4754a5f SHA-256: 3608a68efdcc65767a422694995f7c38adc1e27ae6692e1d7f782c2dd457f21f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=descargar+corel+draw+x8+gratis+en+espa%25C3%25B1ol', is designed to lure users into downloading potentially malicious software. The document also contains a PDF link farm, with the first URL pointing to a benign Shopify file, but the overall intent is to drive traffic to malicious infrastructure.

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=descargar+corel+draw+x8+gratis+en+espa%25C3%25B1ol
    • https://cdn.shopify.com/s/files/1/0434/7074/9861/files/casing_capping_wiring_accessories.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/65369479311.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/treble_clef_line_notes_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/algorithm_design_manual_errata.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/vetaxebenuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7693/5068/files/12200320024.pdf
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/choomantar_song_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0435/5106/4228/files/62470444712.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/pesererakujazupamijujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/cantilever_sheet_pile_wall_design_example.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/the_ancient_egyptian_economy.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0090/files/sibirakifumezamomukowop.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/minecraft_1._13_world_generation.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/1/0429/4197/2646/files/minecraft_1._1

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000635b.bin
ddcd6676afea44b3392cf71f5649079cec9c611daaabbe17561a70c5de24214f
pdf-font-stream PDF embedded font (sfnt) at offset 0x635B 5596 bytes
font_01_sfnt_off00007639.bin
90267573dce79a0c17dd973a484dbb858bd74f36e769c79b0807e54a3fa9673b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7639 10104 bytes
font_02_sfnt_off00009886.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9886 4324 bytes