Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6faa98899d2529…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 03:50:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a885f317f846854faf09a37c899b4d7 SHA-1: 4c78541e8f75d54f8c36ff5e50eb76e581001650 SHA-256: dd6faa98899d2529dcf16ddcc6a4bb4e05762550274b851e62cee483a1ff38bd
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=tratamiento+para+retinopatia+diabetica+pdf'. The document body, though partially corrupted, contains text related to 'Tratamiento para retinopatia diabetica pdf' and the malicious URL, suggesting a lure to a scam or phishing page. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination.

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=tratamiento+para+retinopatia+diabetica+pdf
    • http://files.drtaoka.com/uploads/1/3/2/7/132712206/zimiloze-biwororaj-xonujewiwi-tusaku.pdf
    • http://sideroba.morningsidechildrenscentre.com/uploads/1/3/1/4/131482995/gamobutow_damoxif.pdf
    • http://podegof.hayman.co.nz/uploads/1/3/2/6/132681352/tinuvuzuviwawewut.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/debt_of_bones.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/tuvozajuvakuwine.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/city_of_heroes_controller.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/kevabize.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4534/files/77799183447.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/47737335295.pdf
    • https://cdn.shopify.com/s/files/1/0438/0491/7917/files/filter_list_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/zuxuwar.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/gawerepunet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/35132405508.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/nazasavizedalol.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/56882552588.pdf
    • https://cdn.shopify.com/s/files/1/0428/9242/7430/files/jegagasafu.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_off000064cf.bin
9b63ef8f701d62fa129395c50f5f0c821b1efe835eb04c0ac65b68053636c2c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CF 5180 bytes
font_01_sfnt_off00007650.bin
a9b2efdc8d7b4224b8cf19ab7d1df411776d365399fc6d3f97b007206954707d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7650 11516 bytes

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