PDF malware analysis — malicious · 232447253350a810

MALICIOUS

PDF

54.7 KB Created: 2020-08-09 07:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fa3e20ee582dcee2d4fe757beaceb50c SHA-1: 7d902e20bff103109362a308d33b0072625c46fb SHA-256: 232447253350a810dc8a36df20209ba5010d6a8b87fbaa6cd71ab648f5a0ef90

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=machine+learning+pdf+2020', suggesting a lure to download or view content related to machine learning, which then redirects to malicious infrastructure. The presence of a visual download button heuristic further supports the social engineering aspect of this attack.

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.cc/pify?keyword=machine+learning+pdf+2020
- http://sutumixu.viking-edu.com/uploads/1/3/0/7/130775045/6ae0f557d22.pdf
- http://files.transitusmariae.com/uploads/1/3/2/7/132710700/299140.pdf
- http://damego.guydebordclubofhouston.org/uploads/1/3/1/0/131070356/xufatom.pdf
- https://cdn.shopify.com/s/files/1/0438/2906/7933/files/tiwozu.pdf
- https://cdn.shopify.com/s/files/1/0438/3434/3574/files/saditemebusapaminumopovi.pdf
- https://cdn.shopify.com/s/files/1/0438/2670/8637/files/kibulegikusela.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ganisififado.pdf
- https://cdn.shopify.com/s/files/1/0432/7034/0772/files/tapadewokuvepapikim.pdf
- https://cdn.shopify.com/s/files/1/0435/2960/1175/files/namapexoxipowobuwo.pdf
- https://cdn.shopify.com/s/files/1/0428/7250/4483/files/96236058828.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdf
- https://cdn.shopify.com/s/files/1/0433/3263/2730/files/71693776011.pdf
- https://cdn.shopify.com/s/files/1/0434/8795/3053/files/capitalizao_composta.pdf
- https://cdn.shopify.com/s/files/1/0431/5840/5275/files/buralobopituvogiziv.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000096ac.bin` `8d0928da613378571f64032bdb08c44b9c520066932ef65fb3fa3e4350354023`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96AC	5516 bytes
`font_01_sfnt_off0000a977.bin` `68784da90406a6ba39297876265d21a2f113f5973220faa31057f2186c34848d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA977	10652 bytes

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