Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf4340b42836e80…

MALICIOUS

PDF

41.4 KB Created: 2020-08-02 19:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4076948549ad0a02a3d84e05b8cfe849 SHA-1: b7603385f6e65accbe93b492a005db4666104210 SHA-256: 2bf4340b42836e80120d687d3fcf323f6a9570ec73d047bcf12a28a22059731f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a lure "You can win pdf" and embeds a large number of external links, many pointing to Shopify domains hosting other PDFs. One of the primary links, https://ttraff.com/pify?keyword=you+can+win+pdf, is identified as a malicious redirector. This suggests a campaign to drive traffic through a redirector to a malicious payload, likely hosted within one of the linked PDFs.

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/pify?keyword=you+can+win+pdf
    • http://files.serenitystitchesyarnshop.com/uploads/1/3/2/7/132741571/tagetodatiratefaxi.pdf
    • http://files.kingcandy.net/uploads/1/3/1/4/131454791/0e0e880848cbf.pdf
    • http://files.eatmyanim.com/uploads/1/3/0/7/130740048/rotakugonorawude.pdf
    • https://cdn.shopify.com/s/files/1/0432/9966/8121/files/tekuzip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/53585192671.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/vajujuwuni.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2088/files/vuvepogeditiraluf.pdf
    • https://cdn.shopify.com/s/files/1/0436/6339/2921/files/52573463209.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/volinuja.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/fogarasatedipatexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7007/8617/files/92114795336.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6902/files/diganomivubafewibusev.pdf
    • https://cdn.shopify.com/s/files/1/0438/9430/9019/files/zepasan.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_off0000640c.bin
190d43382e55bc7b75132b7d7ff31351078e9038479434eb7e6046ab30c3795c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x640C 4896 bytes
font_01_sfnt_off000074e3.bin
75e6b11d50586c44db0b12f573eb82c167c815d4ef209c181f30a01c90e2b8bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E3 10712 bytes

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