Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef99249b5c6771ef…

MALICIOUS

PDF

40.0 KB Created: 2020-08-14 19:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43935bb59fc6d578fcb46d76e8c0c6e9 SHA-1: e91b7894884019e993a0e1168cac8206d7fa99b8 SHA-256: ef99249b5c6771ef6d6336fc42f354dbe1f549523dfcf2cff2523768061403bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure related to an 'Addiction severity index self report' and embeds multiple links. One of these links, https://ttraff.cc/pify?keyword=addiction+severity+index+self+report, is identified as a malicious redirector. The document also contains a large number of PDF links, many hosted on shopify.com, suggesting a link farm or SEO poisoning attempt. The overall structure and the presence of a malicious redirector indicate a phishing or scam attempt designed to lead the user to harmful content.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=addiction+severity+index+self+report
    • http://files.ivepetthatdog.com/uploads/1/3/0/9/130969545/a4a29060e4bd5.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/family_life_bible_study_for_couples.pdf
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/pupoxinojefadikalaxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/salaselofujolenabapez.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/nidoguforunubatisawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/legejalavasogewagoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/vupemajapipupoxofagakezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdf
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/jugud.pdf
    • https://cdn.shopify.com/s/files/1/0432/1673/2315/files/79225218399.pdf
    • https://cdn.shopify.com/s/files/1/0439/0351/6824/files/bouncing_ball_animations.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6949/files/78159062377.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_off000060ba.bin
bda0cced1ed57ab5302d0289cd7d7047de8d91fab2f4d8b24fb6bc0f012de0ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x60BA 5160 bytes
font_01_sfnt_off00007262.bin
7520f787ffc2fdcd67b6c67f604971bb3fa8ea8341c26617c6b19bc71c53f390
pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 9664 bytes