PDF malware analysis — malicious · f5d7a9dc8b8b2f33

MALICIOUS

PDF

43.3 KB Created: 2020-08-05 02:27:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3d0d9239a8b499286e8c637e2b8e9a58 SHA-1: 9ea6f1a2ac5fee3e28d746332f46ff0ab3955cb4 SHA-256: f5d7a9dc8b8b2f332ffc9e5108d41c8e9c4190d5a330bdd5e60b9d113422819a

120 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, many of which point to a link farm hosted on Shopify. One of the primary links, disguised as a ketogenic diet PDF, redirects to a malicious URL on ttraff.com. This indicates a social engineering attack aimed at driving traffic to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=ketogenic+diet+food+list+pdf
- http://files.carinapaulsson.com/uploads/1/3/0/8/130874378/viluzupubole-rorefup-pesisat.pdf
- http://files.brokedeckcreations.com/uploads/1/3/1/4/131454262/xomazopoxa.pdf
- http://files.nympa.com/uploads/1/3/1/8/131871433/c8d033a6ad.pdf
- https://cdn.shopify.com/s/files/1/0435/6331/9445/files/busemujosetus.pdf
- https://cdn.shopify.com/s/files/1/0429/0671/4268/files/sims_3_hairstyles.pdf
- https://cdn.shopify.com/s/files/1/0437/7490/2430/files/convert_to_fillable_form_online_free.pdf
- https://cdn.shopify.com/s/files/1/0434/3513/1036/files/neurological_examination_in_dogs.pdf
- https://cdn.shopify.com/s/files/1/0432/8059/7152/files/xuzuditetavusa.pdf
- https://cdn.shopify.com/s/files/1/0434/0131/4454/files/33405581820.pdf
- https://cdn.shopify.com/s/files/1/0428/8380/9439/files/gajamifufonefoji.pdf
- https://cdn.shopify.com/s/files/1/0430/8579/1393/files/24828931619.pdf
- https://cdn.shopify.com/s/files/1/0431/4526/5312/files/puzisal.pdf
- https://cdn.shopify.com/s/files/1/0434/9604/6752/files/16694338074.pdf
- https://cdn.shopify.com/s/files/1/0431/5136/0164/files/8039127192.pdf
- https://cdn.shopify.com/s/files/1/0428/0591/9903/files/addition_1_10_worksheets.pdf
- https://cdn.shopify.com/s/files/1/0437/8286/5058/files/3810433517.pdf
- https://cdn.shopify.com/s/files/1/0435/4372/4186/files/90573917668.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_off00006d21.bin` `5b3ede4811103f62e80ba1585ed7c0045258e5f22088f1a26bab6c35dc3ebf19`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D21	4984 bytes
`font_01_sfnt_off00007e45.bin` `f2d225ff5acc36ed5b28a7ed35e7395126d4c099051e80320c4c16f97a8e174d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E45	9908 bytes

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