Malicious PDF — malware analysis report

Static analysis result for SHA-256 d77ae757a2ce6648…

MALICIOUS

PDF

42.8 KB Created: 2020-09-07 22:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 446f0b890c07a409c91c6e3de2ac83c9 SHA-1: 831b3c9197aee8ec626a0628607a5445c4e2c3a8 SHA-256: d77ae757a2ce6648ee3f94abda28067466e939d8e2294e47e6bf24fa883411b7
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used in SEO link farms to drive traffic. One of these links, 'https://ttraff.me/wix?keyword=is+there+an+allstays+app+for+android', is identified as a known malicious redirector. This suggests the document's primary purpose is to redirect users to malicious websites, potentially for phishing or malware distribution.

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.me/wix?keyword=is+there+an+allstays+app+for+android
    • https://cdn.shopify.com/s/files/1/0436/9353/9478/files/7062300340.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/dnd_5e_guide_bard.pdf
    • https://cdn.shopify.com/s/files/1/0447/8877/7126/files/najumobak.pdf
    • https://cdn.shopify.com/s/files/1/0431/7619/8305/files/50_challenging_calculus_problems_fully_solved.pdf
    • https://cdn.shopify.com/s/files/1/0441/2522/5112/files/64491917669.pdf
    • https://static.usrfiles.com/ugd/9ea91e_9b5fdba831694af7a0603619c737cff1.pdf
    • https://static.usrfiles.com/ugd/b8c837_acc9996442cf4f24886946e74f2cdc9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a9d8c3bd2f34959b9573af6e6a70b68.pdf
    • https://static.usrfiles.com/ugd/856cea_756dd918687f4207b9ceef5a107b5c90.pdf
    • https://static.usrfiles.com/ugd/87a178_7d440a95c2fd4bfb8c7da905de751ef1.pdf
    • https://static.usrfiles.com/ugd/787b0a_35e1eeba61154117bd71a4ac2c5f9e00.pdf
    • https://static.usrfiles.com/ugd/b8c837_1901bbf3cc8c4bffbe11629adf3d6f60.pdf
    • https://static.usrfiles.com/ugd/dd6616_b5201485fc1d46dc9b4c03b930b2c09b.pdf
    • https://static.usrfiles.com/ugd/c162b3_02499a9d24fc4658a014a7a5d4fe8370.pdf
    • https://static.usrfiles.com/ugd/a86d68_b52bae6ebe31424aa5fb89908cf57036.pdf
    • https://static.usrfiles.com/ugd/7f16bd_9abff33f205f41468a2d350c474b0a5d.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_off00006849.bin
ab9d0432ed245108b4eeab71bb13244ff5b735a064fc065e2f2ec4759b4514fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6849 5168 bytes
font_01_sfnt_off000079df.bin
31535e73c5248a0e23fb45f567ba2519248a40c72408ce11e76e7423269b3121		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79DF 11052 bytes

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