Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f6fea8fbde2af4…

MALICIOUS

PDF

37.0 KB Created: 2020-09-06 18:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 473356ba34c5a6b4690b11dc3adc0661 SHA-1: a9480ab0f02cc80a81be4109fbb8c5e7040a53a4 SHA-256: b5f6fea8fbde2af4a54a90e85df241c3fd03adc549458ad23bd39a49f485a236
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=danielson+template+lesson+plan'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a Shopify domain. The document body, though heavily obfuscated, contains the malicious URL and several other Shopify URLs, suggesting a lure to a malicious site under the guise of a lesson plan.

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/pify?keyword=danielson+template+lesson+plan
    • https://cdn.shopify.com/s/files/1/0435/5879/7463/files/43284921761.pdf
    • https://cdn.shopify.com/s/files/1/0440/3593/2310/files/pipuzejiserap.pdf
    • https://cdn.shopify.com/s/files/1/0433/4167/6694/files/uk_and_us_date_format.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/swayamvaram_songs_shoban_babu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/73293237116.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0436/0844/0995/files/ketuvebolubiwegodigirof.pdf
    • https://static.usrfiles.com/ugd/b444d4_dab93ab708724976879905847b340dfd.pdf
    • https://static.usrfiles.com/ugd/c81504_3f0b115eb95f43d7abf26334408c6cc8.pdf
    • https://static.usrfiles.com/ugd/6a22cb_fb6c2a6f1fc648a5baeccb31a7411b56.pdf
    • https://cdn.shopify.com/s/files/1/0443/3536/6300/files/oxigenoterapia_enfermagem.pdf
    • https://cdn.shopify.com/s/files/1/0438/3562/1526/files/72105349088.pdf
    • https://cdn.shopify.com/s/files/1/0431/4339/7525/files/laporan_praktikum_titrasi_permanganometri.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_off000054e4.bin
a0dc1aa3847f4697256864aaf5d27612c32ecd0e2fc3dbc4c450181f2e797f30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E4 4868 bytes
font_01_sfnt_off00006564.bin
598a2ddfe502e61eeb712dbae50e7ffd3fbea4ff0aa6378a06bcfd6b0ceee5e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6564 9964 bytes

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