Malicious PDF — malware analysis report

Static analysis result for SHA-256 2361fdf1f2322dea…

MALICIOUS

PDF

43.4 KB Created: 2020-08-31 05:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523c0159aed73f60a8f8287c0299e74c SHA-1: 7fa764189fc80dce98e15c57b08fbffc48e28c56 SHA-256: 2361fdf1f2322deaddd7b3ef063e4d51d8e8619fc743a54b9c7b694dcea0c960
128 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector finding. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' strongly indicates a redirection to a malicious site, and 'PDF_SEO_LINK_FARM' suggests a large number of links are present, likely for SEO poisoning or to distribute malicious content. The heuristic 'SE_DOWNLOAD_BUTTON' further supports a lure-based 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.ru/wix?keyword=pattern+block+templates+pdf
    • https://static.usrfiles.com/ugd/64f9d2_61f82eead63a43cfb8ead16748c0e04c.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a84e3cf8b1843ffa0db26a71b05c1a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c2fb3c5568142cc918ed01661173540.pdf
    • https://static.usrfiles.com/ugd/e2c250_46ca571e0489443285d13a4eb1d3d54b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3af5d69f79524033a29d31b85a9af94a.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/69491768711.pdf
    • https://static.usrfiles.com/ugd/b8c837_28f1d2db0f344e64b53422d524295b66.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_7a78da4d6dec4b58b6ca0e493cda76b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f72ec573f884ae893bda899ac3d085f.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/70038296547.pdf
    • https://cdn.shopify.com/s/files/1/0436/1663/2992/files/43883191772.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_off0000622b.bin
9994ebc7741027ba586670a5524f2bd24e94d573155360fa4530fd45630e1b5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622B 5504 bytes
font_01_sfnt_off000074c3.bin
c058aa6e2bd80188e50f8327770cc234d5c52e82d16645f6928a7a773e3b848a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C3 14172 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.