Malicious PDF — malware analysis report

Static analysis result for SHA-256 e750d4dca9fb8193…

MALICIOUS

PDF

44.2 KB Created: 2020-09-08 19:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83562c3d4b97b710d1b9a7bfcd58e614 SHA-1: 2f541b93da16d89397f779a2d47d30694d24fee9 SHA-256: e750d4dca9fb81930fc430c55c346714210bcd5ec802787757ec4bde167471c4
128 Risk Score

Malware Insights

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

The PDF contains a lure related to 'crappie fishing guide dallas tx' and embeds a link to a known malicious redirector. This suggests a phishing or scam attempt. The PDF also contains a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse for traffic redirection. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=crappie+fishing+guide+dallas+tx
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/calendrier_scolaire_2020_zone_b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tukesameb.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/99332129307.pdf
    • https://cdn.shopify.com/s/files/1/0439/2232/5672/files/data_structures_and_algorithms_by_balaguruswamy.pdf
    • https://cdn.shopify.com/s/files/1/0459/9378/7559/files/spring_awakening_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/2231/0811/files/31511954144.pdf
    • https://cdn.shopify.com/s/files/1/0434/8467/6249/files/averages_worksheet_ks2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdf
    • https://static.usrfiles.com/ugd/89363e_c28747fb85c04b37b98d0df41d72d31b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8754827eb2ac47299b48b9a1d097bc68.pdf
    • https://static.usrfiles.com/ugd/1be480_0453a00181e94c87a08ed92c2a6640f1.pdf
    • https://static.usrfiles.com/ugd/76156b_e70c4ccb51904a039ac6860747e0411b.pdf
    • https://static.usrfiles.com/ugd/921909_8757c5817563464498dc3b567d5b9cdb.pdf
    • https://static.usrfiles.com/ugd/3f8d85_70a8bb20c8ff4bd1a46a282b1b267b33.pdf
    • https://static.usrfiles.com/ugd/3f0e57_4d7eb1a2548e42ccb44f5395cb057668.pdf
    • https://static.usrfiles.com/ugd/04e6f9_2e328c3c498c4298ab8ba8d855a52f74.pdf
    • https://static.usrfiles.com/ugd/c12414_440dd10721bf42218797ba28f4edcbb7.pdf
    • https://static.usrfiles.com/ugd/7041e4_3e633ca2748b4f4a8b00efd0a0c370d7.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_off00006dda.bin
2141e0c4ec757db71e29a3635f3b664cf3f6cc4c18002934d70a644510516841
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDA 5276 bytes
font_01_sfnt_off00007fc9.bin
fd2606d177c74bac93046837531b218382f0a88c5b9677fe0debe29aa4875ae6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC9 10552 bytes