Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bce5fec175f8880…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 20:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15ed33faecdcbf31b804fe496fcfb25e SHA-1: e9f1ad27bcd0681722612cb1d2f259bd1b649ad5 SHA-256: 9bce5fec175f8880c84e47cadbb1663ee4216eabd05ac0c470a7e3c4ae1a0b9e
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body text and heuristics indicate a lure to download a file, possibly disguised as an Adobe Flash Player update or a FedEx form. The presence of a malicious redirector suggests the intent is to deliver a second-stage payload.

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=adobe+flash+player+11.+3+offline
    • http://loxomizuw.glidinghbw.co.nz/uploads/1/3/1/3/131384171/7603181.pdf
    • http://vogusow.questenginc.com/uploads/1/3/1/4/131437079/6420955.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/download_fedex_international_air_waybill_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7269/files/4680849024.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/fidiroriro.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/movolakuman.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31903895201.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/catalogo_bticino_peru.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/25163091962.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_off00005d3c.bin
af1049fedea33e547f3ab52cc504b9fbbe5c2c97e24f6c8b96b43fe5015a4315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3C 5608 bytes
font_01_sfnt_off0000704e.bin
040bc301a3202100edceca0d9150202f968a58607907d6bbc051c5ae6bfa26fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704E 12364 bytes

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