Malicious PDF — malware analysis report

Static analysis result for SHA-256 f909b2379cbb07f1…

MALICIOUS

PDF

38.5 KB Created: 2020-08-29 19:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bff532dc8548beb04130360f4bc4ab9 SHA-1: cac6447e1f55eac18dadb556f561e6d235914d39 SHA-256: f909b2379cbb07f1e145aad97315470f2d2b4a4567cfad573e9ce694dd584c39
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector URL. The document body text, though partially corrupted, includes the target URL and a benign-sounding title, suggesting a lure to trick users into clicking malicious links. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further stages of an attack. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.cc/wix?keyword=ak%2525C4%2525B1ll%2525C4%2525B1+defter+indir
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/bubble_witch_saga_3_game.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/pivugiteluguwes.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/marketing_strategy_template_google_docs.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/eclipse_software_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/jasiwekebutese.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a5b9655f91b4c0ba1acc5a93a23f9d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_9eace22d32914984a2f7a99007a56742.pdf
    • https://static.usrfiles.com/ugd/36f25b_1827c9f903ac421994abd53d8804b670.pdf
    • https://static.usrfiles.com/ugd/b8c837_3042a32611104a7990a506fb6f861437.pdf
    • https://static.usrfiles.com/ugd/b8c837_921654c3efc74268b9a6c37817a04f38.pdf
    • https://static.usrfiles.com/ugd/b8c837_bda96b91e62445049cbdeb2cb1c3580d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3b7f89ebf664e7781ebe8447bac87b9.pdf
    • https://static.usrfiles.com/ugd/565485_260467ca73204136898924cc976e9524.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddf15af9aa0248c1a4f9dcf97db101ae.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdc492d7cda942e8a070cd6234103fdd.pdf
    • https://static.usrfiles.com/ugd/b8c837_89c8ccee109b40e9ad89d3b19b6d3d23.pdf
    • https://static.usrfiles.com/ugd/b8c837_290324ef6a014476a21a3c596d73df96.pdf
    • https://static.usrfiles.com/ugd/b8c837_62c0611ca66d4988bbad41c61cec1fd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7d1ee1b78a9442ca693c84e1bd26f27.pdf
    • https://static.usrfiles.com/ugd/1849a1_0a43f38097d8475ea8b330d4f1b08fb8.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d94.bin
34838decd47f070df355ab20d5c1a5ebd5e4c170554a2b0bd8c5d9c6ec4cf6df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D94 4276 bytes
font_01_sfnt_off00005c0d.bin
0b57df2479ea225ef5d386890fe08af40904af3f55e45203517626c50f2d5d2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0D 9880 bytes
font_02_sfnt_off00007d40.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D40 4324 bytes

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