Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09535adaa7794e7…

MALICIOUS

PDF

59.6 KB Created: 2020-08-23 15:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 675a96bd719ece19caf1c8df8815e5eb SHA-1: 3d45efd5d0bbf727a8c3734813f56cfa5fecaac5 SHA-256: e09535adaa7794e781aa64b2a18de64ae21576fb4b46f009bc6ae94a9762e191
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=burlodge+rts+hl+user+manual'. This URL is presented within the document body, disguised as a user manual, indicating a social engineering lure to trick users into clicking the link. The PDF also contains a large number of external links, suggesting a link farm or redirection strategy.

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.ru/pify?keyword=burlodge+rts+hl+user+manual
    • http://files.dianakurin.com/uploads/1/3/1/4/131437064/4201348.pdf
    • http://badegifuk.joaquinperezortega.com/uploads/1/3/1/3/131380550/xeganefo.pdf
    • http://files.hus-keevbclub.com/uploads/1/3/2/6/132695213/mevolezebinidot.pdf
    • http://zorim.bereanbiblechurchfm.com/uploads/1/3/1/1/131163599/bc801b3793572d7.pdf
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/malezaku.pdf
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/52934822217.pdf
    • https://cdn.shopify.com/s/files/1/0430/1979/6633/files/77717932557.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/titubiluwupukisena.pdf
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/24065482003.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdf
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/13814794531.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/windows_10_lock_screen_images.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/kuromasijugap.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/96966842851.pdf
    • https://cdn.shopify.com/s/files/1/0434/5102/3526/files/tilodunanojugusidipaj.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_off00009a61.bin
e6240482d0a73aaca3670315e957ad44bab11f9ccf2a51a7e439c8cc1e88aa75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A61 5288 bytes
font_01_sfnt_off0000ac35.bin
704a0dde42da8a20c537ac5ddb6ff247a512b99a759639d15acefdc8167fc77b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC35 16684 bytes

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