Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ae98f6c7450532…

MALICIOUS

PDF

44.1 KB Created: 2020-08-30 01:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69a268171be4aa3b6046798f20fc0a50 SHA-1: 4634b0860f68afc0e7bfd32c9f69021f939e567f SHA-256: 25ae98f6c745053273bf8f34610ecf816541e402587057adfee6e0a53636a636
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive link disguised as a free download for 'English speaking in hindi pdf free download'. This link, https://ttraff.com/wix?keyword=english+speaking+in+hindi+pdf+free+download, is identified as a malicious redirector. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to static.usrfiles.com. The primary attack vector appears to be social engineering through a misleading link, leading to potentially malicious content.

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.com/wix?keyword=english+speaking+in+hindi+pdf+free+download
    • https://static.usrfiles.com/ugd/b4a829_a43dd33e92224e1fada4239ecace4a81.pdf
    • https://static.usrfiles.com/ugd/3f4b99_0043c89ef24a45b089d1cefd48e1c6f8.pdf
    • https://static.usrfiles.com/ugd/067ecb_d3d696cee2e84ae790366372830e70cf.pdf
    • https://static.usrfiles.com/ugd/b4a829_0bcd2bdd34a849b7b99dcb82fc7ea4cc.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9996/files/kolinafuketedodugawuredaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0848/2710/files/89725993565.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/canon_6d_mk_ii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/27924156300.pdf
    • https://cdn.shopify.com/s/files/1/0434/7625/4873/files/91190637778.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/xonejebosuxefuje.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f38b2a135cc4e28abec2c076ae10372.pdf
    • https://static.usrfiles.com/ugd/2b25b5_04f73f6ce7b2435faab43dc436ca7032.pdf
    • https://static.usrfiles.com/ugd/6116da_da65dd5fc15144349c8ae573c0b1be5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c20eb92b6cb9488897b5fdd42d1e0f5c.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_off00005392.bin
dfc9af7774b7b7c8a02969fa38ce2f41313d22e7fef7439d49e942f2616ad9b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5392 5416 bytes
font_01_sfnt_off00006608.bin
b677b9fe0657f5fc74e13a2fe0a2391db315e2da6efb2531204736caeb670c94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6608 14864 bytes
font_02_sfnt_off00009403.bin
6925eb414d2ea13541b02b30a36b4e59a212e3e6284b486d8f3219cea781c3c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9403 3944 bytes

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