PDF malware analysis — malicious · 4679b0b51d39732d

MALICIOUS

PDF

46.5 KB Created: 2020-08-01 16:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ae2281680f15f5d065df8a656767e807 SHA-1: 70c88ee672b98d587cbf5e51c0c61d9aa9333510 SHA-256: 4679b0b51d39732d19660b0c77828d1081c9dd56c4d408c41a302eedce45f2f3

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as weather information. The document also features a link farm with numerous external PDF links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is designed to redirect users to harmful sites.

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.cc/pify?keyword=columbus+ga+weather+hourly
- http://files.europahistoriarum.org/uploads/1/3/0/7/130775162/c3572.pdf
- http://files.akiineventos.com/uploads/1/3/1/6/131606819/bozuxigaposete.pdf
- http://files.greensboroholiday.com/uploads/1/3/0/8/130873718/9436149.pdf
- http://files.bluelightplayers.com/uploads/1/3/1/6/131636644/4697924.pdf
- https://cdn.shopify.com/s/files/1/0431/9127/1586/files/81926693167.pdf
- https://cdn.shopify.com/s/files/1/0428/4504/4892/files/lidilimulajobetatogaxipaz.pdf
- https://cdn.shopify.com/s/files/1/0431/1236/6229/files/55812805790.pdf
- https://cdn.shopify.com/s/files/1/0431/5293/3024/files/sosetozabaki.pdf
- https://cdn.shopify.com/s/files/1/0430/6495/0945/files/sovoxamizapesamugi.pdf
- https://cdn.shopify.com/s/files/1/0428/5592/3878/files/73561248976.pdf
- https://cdn.shopify.com/s/files/1/0434/1438/8888/files/are_ghosts_undead.pdf
- https://cdn.shopify.com/s/files/1/0437/9036/8929/files/reravoxitirepexibu.pdf
- https://cdn.shopify.com/s/files/1/0435/9893/8274/files/6485997954.pdf
- https://cdn.shopify.com/s/files/1/0432/5061/4429/files/91024208486.pdf
- https://cdn.shopify.com/s/files/1/0430/8100/7255/files/cant_hear_on_discord.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000067a5.bin` `94d5c5205a4da7b652a2b971f3619b50878836d17ef7f0351c5c87cb6dffaf78`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67A5	4476 bytes
`font_01_sfnt_off00007759.bin` `9504144c3a0f8a492d803624ff362769238719031345cf2142e5cac266e14dda`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7759	5336 bytes
`font_02_sfnt_off00008962.bin` `8fc4045e62262f0828e41329c32340cf0d3dbbbb06732cbc58dbb91bf608134a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8962	10204 bytes

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