PDF malware analysis — malicious · c169a5123569381c

MALICIOUS

PDF

42.3 KB Created: 2020-08-12 02:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a1e7604058e4d182c8938fcf4f4e8279 SHA-1: 22960025d512f3ffa3a11105085123c4f92224a3 SHA-256: c169a5123569381c603bf4e43b922aa3d8b7343c77804a50574cd8cae5b10a23

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is ttraff.ru, which is known for redirecting to potentially harmful content. The document body contains garbled text and embedded URLs, further supporting the malicious nature of the file.

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.ru/pify?keyword=sediaan+apusan+darah+tepi+pdf
- http://zutig.silvacontentsolutions.com/uploads/1/3/1/6/131636954/zalunuliwa_wuwujagalil.pdf
- http://files.projectufo.org/uploads/1/3/0/7/130739381/4877757.pdf
- http://watazomo.furniture4all.net/uploads/1/3/2/3/132303124/4341103.pdf
- http://files.abeemommy.com/uploads/1/3/0/8/130874231/damowakavil_zomowulefiri_dozivaxiwigem_bigufu.pdf
- http://files.allislandmartialarts.com/uploads/1/3/1/3/131398224/cdd72a2.pdf
- https://cdn.shopify.com/s/files/1/0434/1936/9639/files/tabebeloxejozaxafotiga.pdf
- https://cdn.shopify.com/s/files/1/0440/2230/0822/files/85690817089.pdf
- https://cdn.shopify.com/s/files/1/0432/3852/3047/files/pukexil.pdf
- https://cdn.shopify.com/s/files/1/0427/6515/6508/files/14506839271.pdf
- https://cdn.shopify.com/s/files/1/0434/0826/1287/files/16294060062.pdf
- https://cdn.shopify.com/s/files/1/0434/1956/6231/files/27601574895.pdf
- https://cdn.shopify.com/s/files/1/0430/9087/0423/files/biteloganalabizevese.pdf
- https://cdn.shopify.com/s/files/1/0432/4130/8319/files/el_borrador_libro.pdf
- https://cdn.shopify.com/s/files/1/0427/7328/2983/files/vuxulokawijugupeme.pdf
- https://cdn.shopify.com/s/files/1/0432/2649/7182/files/buvirikatemarovawu.pdf
- https://cdn.shopify.com/s/files/1/0427/9926/8003/files/88315547756.pdf
- https://cdn.shopify.com/s/files/1/0437/0527/0427/files/14738107922.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/
- https://cdn.shopify.com/s/files/1/0427/651

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000067d9.bin` `63442f6a9572348fb92eb1e727e33eb094f5bec983cf0ef6ac3eb330d60d2ac4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67D9	5200 bytes
`font_01_sfnt_off0000797b.bin` `01176177a1558712204891ac3c6ea8a849222972a4ab5706eab05fb3c19e2b1d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x797B	10068 bytes

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