PDF malware analysis — malicious · fb6408633d280ea5

MALICIOUS

PDF

35.8 KB Created: 2020-08-02 04:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c9bc7fabcae94c5cbd47a6dd0f5b339b SHA-1: fb7d4e7eb747eaff535c4d0912433b50c9826ee2 SHA-256: fb6408633d280ea53c1efae1e8141c354bb9fc9753ef1ddacfd98b68b9890058

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=chief+keef+colors+download', which is flagged as a malicious redirector. The presence of numerous other links, many pointing to Shopify domains hosting PDF files, suggests a link farm or a method to obscure the ultimate malicious destination. No scripts were extracted from this sample.

Heuristics 4

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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.ru/pify?keyword=chief+keef+colors+download
- http://files.marinmusicals.org/uploads/1/3/2/7/132710603/3652322.pdf
- http://files.wabanaflowers.com/uploads/1/3/1/6/131636987/jadusuriwov_zonolu_vitetuviwa.pdf
- http://files.personalcheftony.com/uploads/1/3/0/7/130739621/piraxu.pdf
- https://cdn.shopify.com/s/files/1/0437/5294/7863/files/50073533422.pdf
- https://cdn.shopify.com/s/files/1/0433/4462/5822/files/53855660060.pdf
- https://cdn.shopify.com/s/files/1/0436/9013/1609/files/1778150756.pdf
- https://cdn.shopify.com/s/files/1/0432/0762/2824/files/vuvot.pdf
- https://cdn.shopify.com/s/files/1/0431/7449/4369/files/defuvawax.pdf
- https://cdn.shopify.com/s/files/1/0429/2250/8447/files/52078136396.pdf
- https://cdn.shopify.com/s/files/1/0431/6132/1634/files/1334164548.pdf
- https://cdn.shopify.com/s/files/1/0433/6418/8312/files/furikaxirerufol.pdf
- https://cdn.shopify.com/s/files/1/0430/2045/1997/files/laxuxiwexovumadumude.pdf
- https://cdn.shopify.com/s/files/1/0430/4273/4237/files/81553952085.pdf
- https://cdn.shopify.com/s/files/1/0431/9733/3668/files/kavudorevozakazemuxuzowi.pdf
- https://cdn.shopify.com/s/files/1/0430/4211/1650/files/23358802883.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00004c7c.bin` `90122c3f5a96e4e1436c51ca2d35c038662d7681f89386ca84b4f0d5b92162db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4C7C	5168 bytes
`font_01_sfnt_off00005e1d.bin` `d11c03273318680457302d28f274ec43990a341f60ff58754b0e3bf89291ee87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E1D	10816 bytes

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