Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e16c3f732fdb87d…

MALICIOUS

PDF

38.7 KB Created: 2020-08-08 20:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66e1756aa93389c7cbf76a8c632c6702 SHA-1: 15c2ae112cf010f0fd570cd173be4d5dc335ed2c SHA-256: 8e16c3f732fdb87d2cfd290f0332d22fd3921865f82390700938435b90b280a9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links points to a known malicious redirector, ttraff.com, which likely serves as a distribution point for further malicious content. The document body itself is heavily obfuscated but contains references to the redirector URL and other Shopify-hosted PDF files, suggesting a coordinated effort to host and link to numerous PDF documents.

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=great+is+thy+faithfulness+pdf+sheet+music
    • http://files.rsgymnastics.org/uploads/1/3/0/7/130776060/9240920.pdf
    • http://files.behaviormarinselpa.org/uploads/1/3/1/4/131453465/madekapiruta.pdf
    • http://files.corpuschristisc.org/uploads/1/3/1/1/131164372/d3bd089bd4d.pdf
    • http://files.cultivatecornwall.com/uploads/1/3/2/7/132741189/374216.pdf
    • http://files.alteregoretreat.com/uploads/1/3/1/6/131606546/624817.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/zulimofuxifu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/pisevigukavimosutov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/65622970060.pdf
    • https://cdn.shopify.com/s/files/1/0428/9213/2508/files/linear_algebra_and_functional_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/free_to_word_converter_software_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8214/5182/files/menikot.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/9239893650.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9486/files/vabininidefazapibomuxaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/3881/0010/files/41870754551.pdf
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/cat_c15_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7727/8623/files/how_to_insert_horizontal_line_in_word.pdf
    • https://cdn.shopify.com/s/files/1/0432/4032/5282/files/xedixemakaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31688109027.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_off00005729.bin
00ee88f15fb59c4f9f28f4911f2183ae6e249897d2cc53faef96be2cd707814b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5729 5528 bytes
font_01_sfnt_off000069d7.bin
b1f7f8e66c27cc408d97558d25393ed32ed288186c76b883e69f4ef9b33bb4f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x69D7 10472 bytes