Malicious PDF — malware analysis report

Static analysis result for SHA-256 365f03743b31dff8…

MALICIOUS

PDF

39.0 KB Created: 2020-09-16 15:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 021eb0d248cf3d64e8794e62de670094 SHA-1: 34ac840cee6486f0d998acd00e6cf42b25913572 SHA-256: 365f03743b31dff8b45040bece915c0ccdb0f8eae5bf8ad0313ee155fd0705b0
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com' with a keyword suggesting a lure for downloading an Android APK related to Pokemon Go. This URL is flagged as a malicious redirector. Additionally, the document exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify-hosted PDFs, likely for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=pokemon+go+android+apk+indir
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/96533414529.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/ruxuwovus.pdf
    • https://cdn.shopify.com/s/files/1/0440/7010/9334/files/nosiwutujisixexi.pdf
    • https://cdn.shopify.com/s/files/1/0485/8649/0016/files/bipuzuzosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/kakupefazugikameweb.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/55366289564.pdf
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/xofiwawawezugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6048/5541/files/38254109205.pdf
    • https://c3494bf5-3674-4705-bb62-0cc096efb769.filesusr.com/ugd/1cc777_c0a505ca6c72468cbdeb01743b34dcfa.pdf?index=true
    • https://1a5317c8-fe91-47cb-8635-cafeec09f772.filesusr.com/ugd/9df9d6_ad2d7d4b43ba45428c31d6c50dbf9283.pdf?index=true
    • https://3f2d8184-6035-49b6-b210-1ade47d6b5a1.filesusr.com/ugd/035627_447e9311705848c5857cf8dedaea154d.pdf?index=true
    • https://76d5f580-cdb6-4bbd-a933-85bf13f036c2.filesusr.com/ugd/d43733_f9ecfd7b2efd4965afd465ceef707463.pdf?index=true
    • https://ac8ed247-a028-4f7d-8e4f-97707e600511.filesusr.com/ugd/7be1cd_249e2a36ae454631be279513b5c67ef1.pdf?index=true
    • 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_off00005c4c.bin
f816ae358f80f354cc5d83ffd114a4377ddbc6d50a5a8c74e0f306e2e0b75cec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4C 5132 bytes
font_01_sfnt_off00006dae.bin
d98ae0f215c327f4268558ea9649d702432629625388f46e18575a7480a53f60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 9868 bytes

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