Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ca5a10490b905d…

MALICIOUS

PDF

41.2 KB Created: 2020-08-08 11:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5abe0c46c153004efe0aa81777b66826 SHA-1: 9535898ba4a0a75f66dcce73d10e4406bae14fbf SHA-256: e9ca5a10490b905da5b64b140ce67443eed9e449bafcc7ad63fd65fbbd3f287e
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.cc/pify?keyword=cerebral+palsy+exercise+program+pdf'. This URL is likely used to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility. The primary intent appears to be social engineering users into clicking the malicious redirector.

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/pify?keyword=cerebral+palsy+exercise+program+pdf
    • http://zejenaga.pemrevision.com/uploads/1/3/0/7/130775734/wixobituve.pdf
    • http://files.jelmhorst.com/uploads/1/3/1/4/131407704/wusoxofoxaz_wakedisuvip_vilevavo_ruvig.pdf
    • http://files.creativecounselingsrq.org/uploads/1/3/2/7/132710787/5366484.pdf
    • https://cdn.shopify.com/s/files/1/0432/3596/7143/files/zivizefoxoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/femepotufitaxaturu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/72973090389.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/75169487025.pdf
    • https://cdn.shopify.com/s/files/1/0430/4237/3785/files/adding_subtracting_integers_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9546/5892/files/wasomigotuxilaxelonoxesi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/wusudimoworalopodazasizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/16891689073.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/85568568806.pdf
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/64920694006.pdf
    • https://cdn.shopify.com/s/files/1/0451/4558/7877/files/budget_2020_in_marathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4319/1960/files/10444071571.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/28384788696.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_off000062fe.bin
d763560c0e62b77510e12c2f0e04977b7677b8647ccbd7bc760515caa866ed05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62FE 5692 bytes
font_01_sfnt_off00007648.bin
929d2091a2962005ad42dd81388784c848b1074ab046c7add224cc272139b6e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7648 9804 bytes

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