Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ed3ac9beafcaaa…

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 06:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79fe0d054470fd18d723aee018653633 SHA-1: 011abc24746dee2c733e83a6c6255baddcffe008 SHA-256: f5ed3ac9beafcaaa15600338e8068d345e91444ded159beb1479063636dd1735
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/wix?keyword=how+to+play+betrayal+at+house+on+the'. This indicates an attempt to redirect the user to malicious infrastructure. The document body, though partially corrupted, also contains this URL and references to other PDFs hosted on cdn.shopify.com, suggesting a link farm or content-luring strategy. No scripts were extracted from this sample.

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/wix?keyword=how+to+play+betrayal+at+house+on+the
    • https://cdn.shopify.com/s/files/1/0447/1206/7228/files/the_hostage_brendan_behan.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4173/files/xibimadopugeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/compostaje_de_residuos_organicos.pdf
    • https://static.usrfiles.com/ugd/c7a620_9011c59c0b01443e8834112504b0d567.pdf
    • https://static.usrfiles.com/ugd/3e5d97_1934c9870961460bb14e281f7798fe68.pdf
    • https://static.usrfiles.com/ugd/b8c837_55d976cb04a84082b6f311c67079b2d0.pdf
    • https://static.usrfiles.com/ugd/429b25_8ac476fd1285400099a8617235687d52.pdf
    • https://static.usrfiles.com/ugd/735189_d927f098452841c98d60674dcfcafed8.pdf
    • https://static.usrfiles.com/ugd/b8c837_aafe7d4a9c8c49fa97a38022815f22f7.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/wadexoserawe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1070/9913/files/86888149519.pdf
    • https://cdn.shopify.com/s/files/1/0433/7834/4085/files/luxunezufemebe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6878/4791/files/adverb_clause_of_reason.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/2274086869.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_off000062ff.bin
995cd0e2de06758ac29f213b5bedbd0912d533d93987db6d8c7fa6432e9618aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62FF 5200 bytes
font_01_sfnt_off000074b3.bin
e9dedc4ed0612017be0d7ea3525e14d24e21fba7221bef094d72bc33d1bea125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 9864 bytes

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