PDF malware analysis — malicious · d452bfce538cdfe7

MALICIOUS

PDF

56.6 KB Created: 2020-08-31 00:04:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9c8d705c73ba0b0cd5ac6537d545fdec SHA-1: 303e2353a89c65435d4ff98b975992edcabaafed SHA-256: d452bfce538cdfe722b42a1b4897f649531d410d5ea2ce36d14ea41a81830190

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, https://ttraff.com/wix?keyword=leaky+gut+diet+plan+infographic+and+downloadable+pdf, is likely used to lure victims into downloading further malicious content or phishing for credentials. The document body, though heavily obfuscated, contains references to the same URL, reinforcing its role in the attack. The presence of numerous links to static.usrfiles.com, while some are marked benign, suggests a coordinated effort to distribute malicious content.

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=leaky+gut+diet+plan+infographic+and+downloadable+pdf
- https://static.usrfiles.com/ugd/44b221_f9656b91292e40cdbea1b981f62c55dc.pdf
- https://static.usrfiles.com/ugd/7f929b_9e8d9e7cab42490985e17046356fa2d5.pdf
- https://static.usrfiles.com/ugd/b8c837_9698d9746ec44ffb9c18193521fbafa5.pdf
- https://static.usrfiles.com/ugd/4b874d_afc2588e106c488d92aa9a447be59533.pdf
- https://static.usrfiles.com/ugd/704566_4b138fa4bac24336b73a809ffc7f1fd5.pdf
- https://static.usrfiles.com/ugd/b56239_6e99191880ce40a1a974b77556dbeec8.pdf
- https://static.usrfiles.com/ugd/b8c837_cc2df725d53a4123ae0e48095199d0fb.pdf
- https://static.usrfiles.com/ugd/70c1f8_49a2de1977914adb8f9d110b98b8a2ff.pdf
- https://static.usrfiles.com/ugd/6846fe_8c76ed5da77e438ea749d84961606202.pdf
- https://static.usrfiles.com/ugd/b8c837_83a6177815bb45f1bf535570ea7ac4f8.pdf
- https://static.usrfiles.com/ugd/b8c837_48678c07c83842769f636ebcdd7e76a4.pdf
- https://cdn.shopify.com/s/files/1/0431/7223/3380/files/6016197854.pdf
- https://cdn.shopify.com/s/files/1/0432/7977/7952/files/jotelinitopawe.pdf
- https://cdn.shopify.com/s/files/1/0434/3191/9765/files/unfair_dismissal_template_letter.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_off00009bbe.bin` `b3a225a85eaccd43a250eaf259fcd43b5f86bc638cf2f988924aba0ce869a745`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9BBE	5576 bytes
`font_01_sfnt_off0000aeca.bin` `8212f96373949341aa83ef4f36258dc34c2dde7fa25943d249fbfdaa94b06b47`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAECA	11744 bytes

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