Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc8da4fcf78caac…

MALICIOUS

PDF

37.9 KB Created: 2020-08-15 18:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaa2df969bc31e263eed0cdbdb18f8f8 SHA-1: d5a261ea05819cefc4be73dae8df049eabba5cbf SHA-256: bcc8da4fcf78caac8b1d763270ecaa0be0c9e774af9e3a2a55de5e77be623255
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.cc/pify?keyword=beiman+priya+all+song', is flagged as a malicious redirector. The document body contains garbled text but includes the same redirector URL, suggesting an attempt to disguise or deliver malicious content through a link farm strategy.

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/pify?keyword=beiman+priya+all+song
    • http://files.mnnewfs.com/uploads/1/3/1/4/131406735/d87c66859aea9.pdf
    • http://files.theantiquegarage.com/uploads/1/3/2/8/132815388/7013967.pdf
    • https://cdn.shopify.com/s/files/1/0437/1401/9496/files/bafeni.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0327/files/2244296538.pdf
    • https://cdn.shopify.com/s/files/1/0454/2945/7064/files/sesuvegewivuwakujiwakad.pdf
    • https://cdn.shopify.com/s/files/1/0434/8159/6066/files/xoxodekokufabenedalevitu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2392/files/robetezokegafurajebe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/rusasukexokojisenewotovow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/kadutafutalaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/8227649164.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/boris_vian_livres.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/unity_stencil_shader.pdf
    • https://cdn.shopify.com/s/files/1/0433/1683/8558/files/72295949332.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/wafijagul.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/assembling_and_disassembling_of_computer.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/parliamentary_procedure_worksheet_activity_1._02._02.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/
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/parliamentary_procedure_worksheet_activity_1._02._

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049cf.bin
6f4cd7515e3b9f7df2e9c914df308e628b808cfed4f633bda8d93d79863d732a
pdf-font-stream PDF embedded font (sfnt) at offset 0x49CF 4996 bytes
font_01_sfnt_off00005aa3.bin
987c9f7d55f914c1a8e5f71f9d478a6725205907b3d71daab287537e1ac8a030
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA3 10004 bytes
font_02_sfnt_off00007cf0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF0 4324 bytes