PDF malware analysis — malicious · f71e1f5e6e6ed333

MALICIOUS

PDF

39.2 KB Created: 2020-08-07 10:17:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b0b0b0f61d1a0842ac591ca02d3745a SHA-1: 8a5862cbb801964d64d087435e46f4753bcab6c0 SHA-256: f71e1f5e6e6ed3332a0f6bdb9a122a7b96cf446fe966b6f126a4f95908b9538c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious due to a high number of embedded links, many of which lead to a redirector service. This suggests a link farm or redirection attack designed to obscure the ultimate destination of the malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the content's intent.

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/pify?keyword=guia+holman+de+apologetica+cristiana+pdf
- http://niwatudu.charlaphysed.com/uploads/1/3/0/9/130969426/2866157.pdf
- http://kowob.holsteinstatetheatre.com/uploads/1/3/2/6/132681579/kajasavara.pdf
- http://files.amaniabraham.com/uploads/1/3/2/8/132814097/2525609.pdf
- http://files.nhswomenslacrosse.com/uploads/1/3/1/4/131438418/9473772.pdf
- http://tixod.rkeenelaw.com/uploads/1/3/1/8/131858685/tiroxodo.pdf
- https://cdn.shopify.com/s/files/1/0438/4551/7469/files/kidosotixigod.pdf
- https://cdn.shopify.com/s/files/1/0429/7618/2426/files/850940219.pdf
- https://cdn.shopify.com/s/files/1/0437/6972/5085/files/xumekedakopamemofeguf.pdf
- https://cdn.shopify.com/s/files/1/0433/8414/4037/files/59281191592.pdf
- https://cdn.shopify.com/s/files/1/0434/2690/6264/files/56481365069.pdf
- https://cdn.shopify.com/s/files/1/0428/3708/2271/files/68341610059.pdf
- https://cdn.shopify.com/s/files/1/0433/1087/4777/files/65332659860.pdf
- https://cdn.shopify.com/s/files/1/0432/1925/5454/files/kojubedexuperopozaxen.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20880330559.pdf
- https://cdn.shopify.com/s/files/1/0438/7074/8827/files/24547445711.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7641/files/71340131901.pdf
- https://cdn.shopify.com/s/files/1/0429/8558/6849/files/8765371358.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93236297381.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_off0000596a.bin` `9703c864a68b18e955f6d99f694214e58194ca01b63f5ceac1d5534061ca8bb8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x596A	5600 bytes
`font_01_sfnt_off00006c4e.bin` `8503bf8690131bfff1704e6b7946d27edffacbdd2958450887b5f7f2635b09aa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C4E	10288 bytes

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