Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc6daa154f05162f…

MALICIOUS

PDF

39.5 KB Created: 2020-08-30 13:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3458d3419aed0ab855b801eb96cdfe7e SHA-1: d52d6fe7aee9b3ee9902bc63e344f4a3500b0526 SHA-256: dc6daa154f05162fbbc284d8cb69c78f4a8b3ab2eb54e804b23e31b38fe4ac65
68 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. The link leads to 'ttraff.ru', a known malicious redirector. The presence of a 'download button' heuristic suggests a lure to trick the user into clicking the malicious link. The document body itself contains a fake error message for a Kenwood dishwasher, likely to entice clicks.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/wix?keyword=kenwood+slimline+dishwasher+e4+error
    • https://static.usrfiles.com/ugd/b8c837_13949a42db8247f8b44fcf2be7f40b70.pdf
    • https://static.usrfiles.com/ugd/3e9e83_c41b214179884ca5b31e59e8f51e5202.pdf
    • https://static.usrfiles.com/ugd/3f4b99_1ecd58dee61b46abab9fe33b38e47f16.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_3c6de2ec7c4b409da1e79deeeb2fc97c.pdf
    • https://static.usrfiles.com/ugd/b8c837_babffb207e8143ed8cd33ab84d595b2a.pdf
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/pofijumam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/pexifunir.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9891/files/wefidebijiboxoliludirulos.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/twitch_sub_count_emotes.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_off00005d15.bin
3729818fa5748162a63ead85841d48249c03a08c651264c892eba1b728092f29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D15 5212 bytes
font_01_sfnt_off00006eba.bin
b2871fda4cf6cc6550f6cf4e792b2de0287874fd547347deb88691376fb94412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBA 10052 bytes

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