Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdabf49ee809a52d…

MALICIOUS

PDF

53.5 KB Created: 2020-09-03 09:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0ddfdf4da030fb5c8a5a5d04193ef7 SHA-1: b4768d7b4f7fb67d2105c7d8aae743b1ef1d42ad SHA-256: bdabf49ee809a52dfd571a900dc98174a0ef4b3d1a80c86f293062a0c6cfff29
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=balidan+odia+movie+all+song'. This URL is presented to the user as movie song information, likely as a lure to encourage clicking. The PDF also contains a link farm heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0430/8529/9874/files/muporin.pdf'. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the malicious redirector is the primary indicator of malicious intent.

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=balidan+odia+movie+all+song
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/muporin.pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/ged_study_guide_social_studies.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/fizinifeludonuse.pdf
    • https://static.usrfiles.com/ugd/3dd68e_fd380ae7c58e4296a6bae1be65e15866.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/52635800788.pdf
    • https://cdn.shopify.com/s/files/1/0437/5219/4202/files/90615953963.pdf
    • https://cdn.shopify.com/s/files/1/0457/3695/1964/files/xufifurirure.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b975aed840f46c6a6f75c187cd3bbef.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2876952825b457697e95e261c323dd3.pdf
    • https://static.usrfiles.com/ugd/eeb7bd_c2bf57e9bc284a3b94cd3924fcf9b1a9.pdf
    • https://static.usrfiles.com/ugd/d48fe3_02d86e58f6f74682a430a03b474bbb04.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://static.usrfiles.com/ugd/3dd68e_fd

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000778a.bin
22555b6b7a0874c359aec2191b0ea4a4e8ea72ce298250233f34468753662dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x778A 3368 bytes
font_01_sfnt_off000083a6.bin
eb6250dc7cadce166ac64b4bb56c1cfd33d8d578b2ef77e56b4f89c636114fbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A6 5156 bytes
font_02_sfnt_off00009528.bin
1d6a666561067f5565e5c5b2469697aa75108a4b4e454f56b4dc2904abc3b9ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9528 15984 bytes

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