Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b56e125763a6c8…

MALICIOUS

PDF

44.1 KB Created: 2020-09-02 02:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e782aa15bf31eeb1d9a3b21f9a8b043b SHA-1: 76f5d0e04be56c08e9360243022bd8a90c3ec943 SHA-256: b6b56e125763a6c89b89e8a81c494e510fe5e9d10e7914b48b0ad5c913c3731b
162 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many pointing to a link farm hosted on static.usrfiles.com, and one critical link to ttraff.com, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'account based marketing template' and the URL itself, suggesting a lure to a malicious site. The SE_PAYMENT_REDIRECT_LURE heuristic further indicates a business-email-compromise pattern, likely aiming to redirect users to fraudulent payment or account update pages.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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/wix?keyword=account+based+marketing+template
    • https://static.usrfiles.com/ugd/3b7182_b1497707f0f44c478767622dcb0034d7.pdf
    • https://static.usrfiles.com/ugd/37428b_a45f5b46de0043bf8ce5035db552ca82.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1bc55ce464041d79ccc42eea99d3866.pdf
    • https://static.usrfiles.com/ugd/fe0276_f08a56d143a8442fa0019b1f678062bf.pdf
    • https://static.usrfiles.com/ugd/b11f6d_23a0fed25aa44f1d993c4e44bf9a985f.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/20564946798.pdf
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/69517029071.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/how_to_change_to_word_document_on_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/67420273050.pdf
    • https://static.usrfiles.com/ugd/e5412a_aab7c65f73314b7cbe33634895052d5b.pdf
    • https://static.usrfiles.com/ugd/8a419d_d791dc1b2d644c4c9056b660a8915b1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2cfe26c64c86463482b3ab2cde07df31.pdf
    • https://static.usrfiles.com/ugd/822ecd_41b90aadc3e5411b95cc78354070c262.pdf
    • https://static.usrfiles.com/ugd/55f640_d62273c2367a40f79d8262270c005a7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2de4f61e230b4eeb8bfdccea37108081.pdf
    • https://static.usrfiles.com/ugd/f1780b_1d1f09d1251d49e1bc621167c25a2e7c.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_off00006da6.bin
529756fef01e28e6654244575adc04efbb138908edba2df0bc1516c089416a70
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA6 5584 bytes
font_01_sfnt_off0000808d.bin
fc16a35e6e4ea57b65fe046813c16a51d13473be50b3ce84a7bcac894c613907
pdf-font-stream PDF embedded font (sfnt) at offset 0x808D 10164 bytes