Malicious PDF — malware analysis report

Static analysis result for SHA-256 22867d5187c4ac35…

MALICIOUS

PDF

42.9 KB Created: 2020-08-13 21:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c6ff8db8e3db76008dfd87613b2cc25 SHA-1: 7a855be1280bd0b7c02e723ad7fe0bd97eeab0ab SHA-256: 22867d5187c4ac357a23414fd9277be04031a733a2bce4d6cf96fef6dbc0e36e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious link, https://ttraff.com/pify?keyword=5+reasons+why+school+uniforms+are+bad, is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering attempt 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.com/pify?keyword=5+reasons+why+school+uniforms+are+bad
    • http://zubuma.elkhornpenguins.com/uploads/1/3/1/6/131606490/5873874.pdf
    • http://files.roselischool.org/uploads/1/3/0/9/130969896/39b1e13d4f5.pdf
    • http://zonuwoji.emilyeatkinson.net/uploads/1/3/1/4/131409090/zajabipaba.pdf
    • http://files.midtribulationrapture.com/uploads/1/3/1/6/131606756/1010011.pdf
    • http://files.hamradioworks.org/uploads/1/3/2/6/132696174/6179500.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/45838060444.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3518/files/selenium_automation_testing_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/mercedes_c_class_2020_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/75314681204.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/rufixibek.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/sigatuxatatewifirawez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4457/files/sujosom.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/bejosonopaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/76557273246.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_off00006708.bin
a213e091f9c2552771b4c99f6b25a33880ba3f2f8473c77fbbb790394705325a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6708 5624 bytes
font_01_sfnt_off00007a0d.bin
f7f4a7d9df17a8f65c82cbd9dc3d31b278959c8bbb6967e1326f1c2a9a1fe3d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0D 10648 bytes

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