Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a33d4c0b4ca324b…

MALICIOUS

PDF

47.2 KB Created: 2020-08-09 06:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 740bc58a0739362dde0a499577579595 SHA-1: 4982c94e048355c225ec8e67bab90f5891119ade SHA-256: 9a33d4c0b4ca324be30e540c9b9769c5b2a7d25d2d7eccd7601d056a627756ab
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=the+marriage+plot+jeffrey+eugenides+pdf'. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. The presence of many other PDF links, some benign and some unknown, indicates a link farm strategy. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=the+marriage+plot+jeffrey+eugenides+pdf
    • http://files.blairbarbour.com/uploads/1/3/0/8/130874317/1151463.pdf
    • http://files.cadrc.org/uploads/1/3/1/0/131070051/08f3a.pdf
    • http://files.advisorybikelanes.com/uploads/1/3/1/3/131384552/3e3eefe0b9a43d8.pdf
    • http://files.beitnachum.org/uploads/1/3/1/4/131483253/ximegigojepirez_rabisosip_suwupisi.pdf
    • http://kiwanibug.hannah-richardson-beauty.co.uk/uploads/1/3/1/1/131164250/7699314.pdf
    • https://cdn.shopify.com/s/files/1/0433/5350/5946/files/83969778855.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/31063953159.pdf
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/mebudex.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/git_delete_changes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/wowajurajonesav.pdf
    • https://cdn.shopify.com/s/files/1/0429/8545/5769/files/gezonufosokenekutipoluza.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6290/files/bowen_reaction_series.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/67178303030.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/27665761206.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdf
    • https://cdn.shopify.com/s/files/1/0435/2419/4468/files/bokuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/renotix.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_off00007961.bin
9bdd1009f430d54c09b25b4abbd12457677e33b9042a9688f4139392fc60d173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7961 5584 bytes
font_01_sfnt_off00008c41.bin
4f12301465b7e3cf195c2f9db1ce8c5a0daa920110f44d400d3ed2a2c555dc82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C41 10476 bytes

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