Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd83bb115e2ac65c…

MALICIOUS

PDF

59.1 KB Created: 2020-08-01 11:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77b8f4d65f1dfc310d403d629f242dc5 SHA-1: 0c4d04128c3cf27fc4815f429ffbdd1f3af39284 SHA-256: bd83bb115e2ac65c68897af8019ca6cc9e732e8c7d330a106212cea1aa804a28
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent URL, 'https://ttraff.ru/pify?keyword=space+marine+codex+2015+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for users searching for specific content. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.ru/pify?keyword=space+marine+codex+2015+pdf
    • http://files.floridafoundationdh.org/uploads/1/3/0/7/130739081/bazamofajipi.pdf
    • http://files.arrivecollegeconsulting.com/uploads/1/3/2/6/132695491/nezewuzizexoma_suligeja_rorar.pdf
    • http://files.acroemotionyoga.com/uploads/1/3/0/7/130775503/4800679.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/dark_souls_winged_spear.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/misajisowozodefaludeson.pdf
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/40748595749.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/68464699058.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/jetifemitujituvex.pdf
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/4684620747.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/59205980462.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69651331918.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/5004216126.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/76411597621.pdf
    • https://cdn.shopify.com/s/files/1/0430/1189/9545/files/besezuwim.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c08.bin
9a2b661b64e2e50322c8e85edca4dc8c8cde8bf83af2ecfc3e0b0e657633b290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C08 5712 bytes
font_01_sfnt_off0000af77.bin
d72994553c90f26550386ad489923380953cda041a4de7d5c293edf091df0e0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF77 15452 bytes

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