Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e4ec31f5b00ee40…

MALICIOUS

PDF

48.2 KB Created: 2020-09-06 03:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3ed29273d6aec9883b8ed18a4c4a951 SHA-1: 7f6218210a105bea7aa3171a34563596fa53aae3 SHA-256: 4e4ec31f5b00ee400d5c2c08975f7a8a2ad848cdd17af0ed02ac316e32c8b8ae
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to lure users to a harmful site. The document body contains text related to 'blueprint education computer answers class 9' and includes the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, suggesting an attempt to obscure the final malicious destination.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=blueprint+education+computer+answers+class+9
    • https://cdn.shopify.com/s/files/1/0433/9662/8641/files/38974639701.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/circus_circus_menu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/larobisosuwerisogubawub.pdf
    • https://static.usrfiles.com/ugd/8ade13_3042b9b8edbb489387c9e7b0def6b4ca.pdf
    • https://static.usrfiles.com/ugd/45e30f_31d9b7fff99340f297d66ec58b131061.pdf
    • https://static.usrfiles.com/ugd/185811_a38418f3b35d43a4bd223ca276270a4e.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/jidapo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0335/files/tarepuzoxobexomis.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/download_surah_ar_rahman_dan_terjemahan.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/xirubodemofazilezobofit.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/mobafasolijeredije.pdf
    • https://cdn.shopify.com/s/files/1/0439/2108/0475/files/calendario_de_vacunacion_2020_peru.pdf
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/ludekaziwedilulejikusibez.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7268/files/ciara_level_up_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4552/7445/files/kamazazafopelubebaxiwe.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_off000070d1.bin
4f54d1f58da174f66ca3325c53aab19cb2e0d7a1aaf07c95ab1b10c6a165453b
pdf-font-stream PDF embedded font (sfnt) at offset 0x70D1 5396 bytes
font_01_sfnt_off00008318.bin
4b67736c53edc0acabcbbfffebe18d0a250d6cbaa6b93cc3253bc5d9e0d8c714
pdf-font-stream PDF embedded font (sfnt) at offset 0x8318 10116 bytes
font_02_sfnt_off0000a5a7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A7 4324 bytes