Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d8e90575f3eb5b…

MALICIOUS

PDF

48.6 KB Created: 2020-09-03 05:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82d9fb45e1dc66e5383096773899a845 SHA-1: f5ed63e3876af9518dabaef37d0ac8afffefae5f SHA-256: 49d8e90575f3eb5bd148ece6e68bfc342555ee6455f2d52e221c19547b93b472
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.link/wix?keyword=best+android+action+adventure+games+2018', which is flagged as malicious. The presence of numerous links, many pointing to shopify.com, suggests a link farm or SEO manipulation tactic, with the primary malicious link likely serving as a lure or initial stage of a broader attack.

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.link/wix?keyword=best+android+action+adventure+games+2018
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/82034036925.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2931/files/annamaria_testa_farsi_capire.pdf
    • https://cdn.shopify.com/s/files/1/0437/3849/7185/files/efns_guideline_treatment_cerebral_venous_sinus_thrombosis.pdf
    • https://cdn.shopify.com/s/files/1/0428/6663/9014/files/xiriv.pdf
    • https://static.usrfiles.com/ugd/10b11f_9595b014b4964d788464618e375373a7.pdf
    • https://static.usrfiles.com/ugd/0779a3_008c01411fa04f70a63dea380904cbf6.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9843def85c248e6a25c0dfb447b3b62.pdf
    • https://cdn.shopify.com/s/files/1/0437/1175/8491/files/99939537478.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4677/files/38439889218.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/3075238441.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_off00007ed5.bin
eea6b47640885fe7f38a6b5d423d1ba4d9c4fcb64a39dc1ac0748c9a122ce13a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED5 5856 bytes
font_01_sfnt_off000092b4.bin
f8d364a7fc6e3d7540ff911f250c778b0493da410c60cdcfc6d641c5aa0d8bd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92B4 10364 bytes

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