Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae8fc7df1fa5c52…

MALICIOUS

PDF

44.3 KB Created: 2020-09-02 07:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58982b5beb2ae09744f8fcb394ae7918 SHA-1: b644e63ac0a716f7beab37b883c1f3d3efe7b996 SHA-256: 4ae8fc7df1fa5c5229e8b1dde4aafd8e73ff02fa3e943deaa30a1374d92449a6
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to '11th step prayer guided meditation' and the malicious URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely part of a link farm to improve search engine ranking for 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.link/wix?keyword=11th+step+prayer+guided+meditation
    • https://static.usrfiles.com/ugd/eed56f_121beb4427a14c5194dec444633f1f5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_dac046756b5645e0902e25a83b11bb75.pdf
    • https://static.usrfiles.com/ugd/8a419d_a8434742b13b4d3394e2a221248e0218.pdf
    • https://static.usrfiles.com/ugd/9c58c5_b06202f50acd466f9a22fbb5b01f1cc8.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/fetivuvemezepadoz.pdf
    • https://cdn.shopify.com/s/files/1/0440/6499/7526/files/ski_jam_katsuyama_snow_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/7850488731.pdf
    • https://cdn.shopify.com/s/files/1/0437/6805/3909/files/41721278761.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/my_first_day_of_kindergarten_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/3271/4135/files/larunedemajumodafa.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/35719465759.pdf
    • https://cdn.shopify.com/s/files/1/0437/8184/9245/files/brother_in_arms_3_java_game.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_off000070cc.bin
f0eeb386e411d6b7c24e72118a66e359a4e068cc4cd145ee6553e2d88e0e577e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CC 5400 bytes
font_01_sfnt_off00008309.bin
e6b9e899f57eb35a623995ffbeccb4378338d483fb9831bbcaad285480f78e89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8309 9868 bytes

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