Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e006de5480ffc37…

MALICIOUS

PDF

43.1 KB Created: 2020-08-02 15:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f0efed5e5e7f07d7f05e1d74da2551e SHA-1: e9f033d44b29a373799a704aefc6cf8a1686645b SHA-256: 3e006de5480ffc37a5c3c38babb733e1003844fb564b88cfca8df1166d367f47
150 Risk Score

Malware Insights

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

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/pify?keyword=pak+study+manual', is designed to redirect users to malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=pak+study+manual In PDF document text
    • http://files.azlames.com/uploads/1/3/1/4/131409037/3765859.pdfIn PDF document text
    • http://files.turuan.org/uploads/1/3/1/3/131398142/385e3c7e4d4f17.pdfIn PDF document text
    • http://files.twofishmoon.studio/uploads/1/3/1/1/131163751/kopabo.pdfIn PDF document text
    • http://files.spanishteachermalaga.com/uploads/1/3/2/8/132814048/birorim_beveros_didemifi_bumup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/bewesoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2247/4651/files/nosirubavajejatawaneledag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/bajulapokeruvidadep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2880/6808/files/34177588229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/23216123596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90278046640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/11992889037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/47699451591.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e8c.bin
534c17c89bf7ea362cc51577140652a9237154c36f96096b898da37de1e8d505
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8C 4648 bytes
font_01_sfnt_off00006e3b.bin
ae60c186fd2c1d1e7bb26311f997bc6543c54f655f028b8f6c1f657ef9bb6469
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 10580 bytes
font_02_sfnt_off00009239.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9239 4324 bytes