Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb96f40eb0d185c1…

MALICIOUS

PDF

41.5 KB Created: 2020-09-06 18:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f9a4b0072a54b73cbd460e74d34b9ff SHA-1: 6e8c6520eb079e4c1365258253fe4a0ace17f1ab SHA-256: eb96f40eb0d185c177517f9744f1e7c6893173c4ab2b5cfac01cad010e982d20
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.me, which is used to serve content related to 'moviescounter 2018 hollywood movies'. The document body, though heavily obfuscated, contains similar text, reinforcing the lure. The presence of numerous links to shopify.com and static.usrfiles.com suggests an attempt to disguise the malicious redirector among seemingly benign links.

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/wix?keyword=moviescounter+2018+hollywood+movies
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/86673271491.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/tazudumiwisidugolexi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/21908156412.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7709/files/chopin_etude_25_11_sheet_music.pdf
    • https://static.usrfiles.com/ugd/7d21c0_611b4e557c904cc2a35f17ac9d48a9a3.pdf
    • https://static.usrfiles.com/ugd/4cf28d_0710ccfcfbe943bbaffc35cead5b61f0.pdf
    • https://static.usrfiles.com/ugd/8cbfce_78c3f772dc6a4dc6835406f5e2cbc1a5.pdf
    • https://static.usrfiles.com/ugd/f64db8_f8815dbf09534301a58133e4d861ab5b.pdf
    • https://static.usrfiles.com/ugd/3b47cb_8b33cc2b7534401b821576d47add5a9e.pdf
    • https://static.usrfiles.com/ugd/185811_a7e30135a1c546ddb6bb3d79c21b0cac.pdf
    • https://static.usrfiles.com/ugd/de9003_dea4c27b80874270b46f55b49d64b407.pdf
    • https://static.usrfiles.com/ugd/6260fe_3a3a40698e464ec8ab8d7580a2e986e1.pdf
    • https://static.usrfiles.com/ugd/c1c462_0bc047e124ae4de989f78d227823b726.pdf
    • https://static.usrfiles.com/ugd/ab059d_5a41b2ec5577443a950a982b015a88d1.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_off000062d3.bin
d1de52abcedbc23c9a7cdebb1b648665cbfa5bcf592f470268204778b4275928		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D3 5748 bytes
font_01_sfnt_off00007672.bin
3c6b3355a3a4c35d648892798e3eadbe66133b2dda7e9c0ce8980495c00880ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7672 10196 bytes

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