Malicious PDF — malware analysis report

Static analysis result for SHA-256 915b001e2a61c448…

MALICIOUS

PDF

48.2 KB Created: 2020-08-31 05:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb4167b21e703b81d2d86d2d4150c6ec SHA-1: 280fa142fbb3d09bd66ba236b17dd6d097900f58 SHA-256: 915b001e2a61c448a591edd50b25e364f1e63fdc41db54ccda1bff77c79410bd
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=betrayal+at+house+on+the+hill+errata+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify and static.usrfiles.com, suggesting a link farm or redirection strategy. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves luring users to malicious infrastructure via a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wix?keyword=betrayal+at+house+on+the+hill+errata+pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/leluxakiloruroda.pdf
    • https://cdn.shopify.com/s/files/1/0435/9903/6573/files/twirl_a_squirrel.pdf
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/vafuzufeguvanaxosiwa.pdf
    • https://cdn.shopify.com/s/files/1/0439/9199/0430/files/felofemanavorowabaka.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/nervio_vago_funcion.pdf
    • https://cdn.shopify.com/s/files/1/0432/5346/5243/files/somo_album_download.pdf
    • https://static.usrfiles.com/ugd/80bfa9_5189dcbaf1f34211be6cef136934829d.pdf
    • https://static.usrfiles.com/ugd/10e3af_9bb459f4f36148bb88af91dde53bca24.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fbb7c673101445893d7852fea85c092.pdf
    • https://static.usrfiles.com/ugd/b8c837_d480769a35384017974c1bb12043c8d9.pdf
    • https://static.usrfiles.com/ugd/ab059d_e8f5aef88c9e47f1a3100c9ccf9b8ff2.pdf
    • https://static.usrfiles.com/ugd/b8c837_5fc6c97f93bc4691a976cd63338b8b70.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4070b95493a40ac9285ce3d84f40896.pdf
    • https://static.usrfiles.com/ugd/b5472a_6ca75141d951423d91d38daf4b1b0504.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006726.bin
66076cbafa3b86bcc9a7afbe790ae57dac06d71e3922aa84fb045e21df4f6312
pdf-font-stream PDF embedded font (sfnt) at offset 0x6726 5164 bytes
font_01_sfnt_off000078a7.bin
35bb435acf40d145cbbf078ebc4f4c60b5fb1128909fa2498efe8de98f54e43d
pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 2636 bytes
font_02_sfnt_off000083dc.bin
30a9f3bbe192d2a147dba475563785b57d1b3607e7529b72af7588e9a2185eb3
pdf-font-stream PDF embedded font (sfnt) at offset 0x83DC 9828 bytes
font_03_sfnt_off0000a57d.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xA57D 4324 bytes