Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee3826c16ee6567…

MALICIOUS

PDF

40.4 KB Created: 2020-08-16 21:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af56e3cb4e2b48a8badd5725b3dc2f7b SHA-1: 84c5f254c9d2ac37af6f848a84cd774663082a17 SHA-256: dee3826c16ee6567aef94cc3438dc4bd7f25ae61966b88cd34feb8657d12e24a
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.com. The document body, though heavily obfuscated, contains text suggesting a lure for a 'Phd thesis powerpoint template' and includes the malicious URL. Another critical heuristic, PDF_SEO_LINK_FARM, indicates the PDF is part of a link farm, further supporting a malicious distribution pattern. The presence of a visual download button lure reinforces the deceptive nature of the document.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=phd+thesis+powerpoint+template
    • http://files.wordplaygifts.com/uploads/1/3/1/6/131606487/tolituta.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/tanagigoxugefeza.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1581/files/gasovarurivakekinaxoneva.pdf
    • https://cdn.shopify.com/s/files/1/0436/6080/4249/files/renutov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/mabewuribadatapara.pdf
    • https://cdn.shopify.com/s/files/1/0438/1864/7709/files/ferudetamutunaluloz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/bokune.pdf
    • https://cdn.shopify.com/s/files/1/0439/7514/7678/files/gijazarok.pdf
    • https://cdn.shopify.com/s/files/1/0428/1240/7967/files/rufupesavosalizufipawix.pdf
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/5222366445.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_off000061c4.bin
20273f62ab86781f13572a27019939d5f2bd2199669ffd6d43ed9f0bfed3eb1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C4 5292 bytes
font_01_sfnt_off0000739d.bin
4ec18ccd2f1f9e6135d4e200bb4d964b02f29e01c426e01d2c0c84a7542b2a59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x739D 9776 bytes

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