Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e3ba5538f5f23e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-10 01:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5babc7f86150fc1b0845a22c740efada SHA-1: d30c822895715714c63196066697f24103e4bd4c SHA-256: 19e3ba5538f5f23ed0e19fae339f9fe4b9bb23efa9274ccae4c6e6714bda773e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, indicating a lure for users to click through to potentially malicious content.

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.cc/pify?keyword=free+perfect+attendance+certificate+pdf
    • http://files.scottishcolliepreservationsociety.com/uploads/1/3/2/6/132695200/fidune.pdf
    • http://files.iwfgeorgia.org/uploads/1/3/1/4/131455883/dofez.pdf
    • http://files.dyaelkelley.com/uploads/1/3/2/6/132681479/3914420.pdf
    • http://files.interlakescommunitycaregivers.org/uploads/1/3/2/7/132710569/307325f.pdf
    • https://cdn.shopify.com/s/files/1/0432/5349/8019/files/jazumojivuruz.pdf
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/pixefufesif.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/can_i_search_a_on_my_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/21707356077.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/4983/5930/files/74074133530.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4664/files/oracle_sql_developer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8565/0325/files/anorexia_y_bulimia_trastornos_alimentarios_rosa_maria_raich.pdf
    • https://cdn.shopify.com/s/files/1/0435/0027/3830/files/velidexowegosotosazazinan.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/aditya_hridaya_stotra_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/madilosatomixozijuxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/duguwejuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/80694695993.pdf
    • https://cdn.shopify.com/s/files/1/0428/3177/3852/files/6490798568.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_off00006cc1.bin
41643af0cef18e4fdc36903cc3157138bef669bb6763e078e17c30098edad001
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC1 4896 bytes
font_01_sfnt_off00007d7c.bin
3762927a238081875a5dc2827ae32090353adb3a9e06cf91eafb621dfcaf2fbc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7C 9748 bytes