Malicious PDF — malware analysis report

Static analysis result for SHA-256 5545f6f1e9ea80d9…

MALICIOUS

PDF

45.7 KB Created: 2020-08-30 15:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c40ba6789fced873c740469d4b7e1d3 SHA-1: 361e7543908432a1cc265e6cd73a3354f04b0f3e SHA-256: 5545f6f1e9ea80d9c7df55e4d6c0e6cdb37f91ed97a48e5d519159f09043fc93
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Turkish airlines ticket number format' and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm or redirection strategy. The SE_URGENCY_LURE heuristic suggests a social engineering tactic, though the specific urgency language is not clearly discernible from the provided document body excerpt.

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/wix?keyword=turkish+airlines+ticket+number+format
    • https://static.usrfiles.com/ugd/a4d998_1ef52f10567041f78e30fe053426fb8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_821e933222a64af9b7de43d3807d34f3.pdf
    • https://static.usrfiles.com/ugd/576447_3c1c8037a5bc46ba9eba6dbbdc4738c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_685c5de96c4c4fb7b9e312da8da0a627.pdf
    • https://static.usrfiles.com/ugd/2b25b5_0f27e947518244b68578477398b82a46.pdf
    • https://static.usrfiles.com/ugd/eda9ba_b71eee7e3b1c416bbfb3f13ee10cc488.pdf
    • https://static.usrfiles.com/ugd/4725f1_ce7a53149add45f98ee6ce1f8dc95f9b.pdf
    • https://static.usrfiles.com/ugd/aef5b7_7f4b059f205e4badac52eed16de17630.pdf
    • https://static.usrfiles.com/ugd/a4d998_a4520e4546ef4b19a4a043d407c68d1b.pdf
    • https://static.usrfiles.com/ugd/f63f29_cee11a5610d94f8d8b94aa42e9bd0638.pdf
    • https://static.usrfiles.com/ugd/b8c837_56a93c25b40a4abdb5888578d90f060e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b45f645a8f446e1a05ee991c4a83db5.pdf
    • https://static.usrfiles.com/ugd/6924eb_9399dabe50e340afa1bf6473e778b285.pdf
    • https://static.usrfiles.com/ugd/b8c837_184f284dc41c41738d9cb2833859b8bf.pdf
    • https://static.usrfiles.com/ugd/4d400c_e3f1c5c2bfe344bcadeffae900a30e0d.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_off0000754f.bin
6d4030873236cb550c6d277acd8ef1ea451a4354d21c60f67ef264839c51573e
pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 5276 bytes
font_01_sfnt_off0000870c.bin
9e636ef2a5f928c2eb0dc6b6a8cf47c65a3fc94956b91481e85ba3a64c83e4f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x870C 10284 bytes