Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c16969e03c5dd17…

MALICIOUS

PDF

46.8 KB Created: 2020-08-31 15:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da2700125642094e20404ee4a16f112 SHA-1: 82b00212849d21c2855682e0d1832aceb9d0f020 SHA-256: 4c16969e03c5dd170134ecf5454c3cb5b3f6a0241b3d59f9eb8d5bbfb0daaa5b
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=v%25C3%25BCcut+kitle+indeksi+nas%25C4%25B1l+hesaplama+form%25C3%25BCl%25C3%25BC'. This indicates an attempt to lure the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, including 'https://cdn.shopify.com/s/files/1/0432/6290/2438/files/musesep.pdf', suggesting a broader SEO poisoning or traffic generation scheme. 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.ru/pify?keyword=v%25C3%25BCcut+kitle+indeksi+nas%25C4%25B1l+hesaplama+form%25C3%25BCl%25C3%25BC
    • https://cdn.shopify.com/s/files/1/0432/6290/2438/files/musesep.pdf
    • https://cdn.shopify.com/s/files/1/0465/3757/2502/files/cypress_reporter_html.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/xaluzuxufebalodag.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/astm_a530_a530m.pdf
    • https://static.usrfiles.com/ugd/89363e_c48657cb3a1f4ed297dff0f51f0c9443.pdf
    • https://static.usrfiles.com/ugd/9219f8_6aebff9dec9141b3849c1c63f66ee3bf.pdf
    • https://static.usrfiles.com/ugd/b4a829_6456a3f867ba42fd886ffc3d4a59c29f.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/transfer_music_to_ipod_without_itunes.pdf
    • https://cdn.shopify.com/s/files/1/0432/3092/0871/files/joindre_plusieurs_en_1.pdf
    • https://static.usrfiles.com/ugd/7dd30d_164b6ce672dd4f4fa9f7244e4050eab6.pdf
    • https://static.usrfiles.com/ugd/b8c837_e1170fe5bb9b42beaf18c4ff951fc045.pdf
    • https://static.usrfiles.com/ugd/b8c837_574a037abe994a8a9fa4f279587cdbb0.pdf
    • https://static.usrfiles.com/ugd/b8c837_cade67cea84a41fc9e88258cc3f9f00a.pdf
    • https://static.usrfiles.com/ugd/cfbfd2_235a713cb7114a22a05d3f7aa4d8b4dd.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006548.bin
10fd1fff2f33d90038b9e81fb2cabdbb49903a6890f22aed88128e0b3d1520e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 5460 bytes
font_01_sfnt_off00007773.bin
d5fb7fe1bcd7403cccd843f5cfbcbae9302d7cb1d5fd1ac643bf19734b8ab54f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7773 12380 bytes
font_02_sfnt_off00009d25.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D25 4324 bytes