Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac3af6fa72f00ec…

MALICIOUS

PDF

34.3 KB Created: 2020-09-03 08:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c100c4eef2670815169034de0df01a5 SHA-1: 7c840d8781aeeea5599e20be56305a2d1f037579 SHA-256: 3ac3af6fa72f00ec96a11b0d3c50ad164cea9bbfc7f7fbac42ffb35ec4d70590
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=dj+maxi+bombastik'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0432/3832/6432/files/how_to_use_grid_template_areas.pdf'. The document body contains obfuscated text and URLs, further supporting the malicious intent of redirecting users to potentially harmful 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.me/pify?keyword=dj+maxi+bombastik
    • https://cdn.shopify.com/s/files/1/0432/3832/6432/files/how_to_use_grid_template_areas.pdf
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/rousseau_kant_goethe_cassirer.pdf
    • https://cdn.shopify.com/s/files/1/0437/2014/7112/files/vedepejebogekuwul.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/65071562974.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/windows_10_1903_update_kb.pdf
    • https://static.usrfiles.com/ugd/d55797_acd836bbd4244848ba6c56f814f414ad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulifagavukaxubodipiripu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/jejigusakavureloziziwa.pdf
    • https://static.usrfiles.com/ugd/b910ae_bc1148afa3cf48c3a7560212e420c44b.pdf
    • https://static.usrfiles.com/ugd/d79848_e49fbc23b30240f69374b33a9b67cef0.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_off00004110.bin
3188ffe2ed7363ebea552ac4389709e18c2a6e337354c90741871b867feaf8d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4110 5048 bytes
font_01_sfnt_off0000523a.bin
6a507fdd2317fbcce8a04ffbfc10e3b697663bc537a3b01c8260e4e9fe78e9e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x523A 13320 bytes

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