Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a6314b4a3ca142…

MALICIOUS

PDF

76.6 KB Created: 2020-08-09 03:36:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feb06a1c77b70f14a2f91b1e35358223 SHA-1: 4284f5365744e362db844cac0d57fab0a61eeed3 SHA-256: 24a6314b4a3ca1426d66511696755db9b484837e22799ae4cea3138fce80ffea
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented as a Toyota supplier quality assurance manual, likely to trick the user into clicking. The PDF also contains a link farm with numerous Shopify URLs, suggesting an attempt to obscure the malicious redirector or to appear as a legitimate document repository. The document body, though heavily obfuscated, contains the malicious URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=toyota+supplier+quality+assurance+manual+filetype+pdf
    • http://files.byersbuilders.com/uploads/1/3/0/8/130873715/bb561.pdf
    • http://files.faithjourney.co.nz/uploads/1/3/1/4/131482931/tajab.pdf
    • http://litab.hofforce.com/uploads/1/3/0/7/130739564/sivaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/85556810334.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/23829899905.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/35876435945.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0575/files/97769912310.pdf
    • https://cdn.shopify.com/s/files/1/0433/9456/4252/files/yanmar_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/wii_virtual_console_wads.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81397135942.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/81867336641.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/12057588608.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/niwiwesetizumos.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d866.bin
53440c5e0ba722876ab44223c21a607c0331871c0f26d42facc85e5ceee8dd37
pdf-font-stream PDF embedded font (sfnt) at offset 0xD866 5476 bytes
font_01_sfnt_off0000eaf7.bin
abd72d7bc141e9cda45b7da3ab6dee61d0679556a06c90fdabd50d7b8d332052
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF7 10716 bytes
font_02_sfnt_off00010f85.bin
492b72e9e8f0bcef963ad10e88f80b5598216a8c56d4f3a27963a6a5716a4957
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F85 16084 bytes