PDF malware analysis — malicious · ecd787215af0d6b2

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 07:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ab78868cfd614562898d0081ef5a54f8 SHA-1: db1ef70f9b9f20a51db5eec14f9f8222bbeafb2e SHA-256: ecd787215af0d6b2fb995d3e069fba78fbcc09fa670eacc031801ed3df81a7c2

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=university+physics+for+the+life+sciences+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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=university+physics+for+the+life+sciences+pdf
- http://files.holisticvieau.com/uploads/1/3/1/4/131455543/3804295.pdf
- http://files.guapa-shop.de/uploads/1/3/2/6/132696112/kexasanib.pdf
- http://files.mathclan.ca/uploads/1/3/1/4/131453124/3460390.pdf
- http://files.joetomasovsky.com/uploads/1/3/0/8/130814858/xilugogotuko-poberopi-ninuma-zagofa.pdf
- http://files.camprofiledesigns.com/uploads/1/3/1/4/131438538/9963082.pdf
- https://cdn.shopify.com/s/files/1/0432/5143/3627/files/87111734799.pdf
- https://cdn.shopify.com/s/files/1/0427/5470/3526/files/74401145152.pdf
- https://cdn.shopify.com/s/files/1/0431/5293/3020/files/nuxamokemajopagefetun.pdf
- https://cdn.shopify.com/s/files/1/0428/4776/4636/files/75768339307.pdf
- https://cdn.shopify.com/s/files/1/0433/3495/9256/files/79374453502.pdf
- https://cdn.shopify.com/s/files/1/0437/9151/5797/files/ravogedapoxa.pdf
- https://cdn.shopify.com/s/files/1/0434/4191/4006/files/44331692970.pdf
- https://cdn.shopify.com/s/files/1/0432/3852/3047/files/xezaturiletobejewerogij.pdf
- https://cdn.shopify.com/s/files/1/0428/4219/4083/files/maxugodelanujunige.pdf
- https://cdn.shopify.com/s/files/1/0430/8366/1461/files/13411828502.pdf
- https://cdn.shopify.com/s/files/1/0432/7938/4734/files/39629284323.pdf
- https://cdn.shopify.com/s/files/1/0430/4230/8250/files/viwijo.pdf
- https://cdn.shopify.com/s/files/1/0437/6815/2216/files/30898212684.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_off00006a91.bin` `050eef8151e56e0e7666633ef550f6eae169bcb5767ab4313c37a90dc743de45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A91	5188 bytes
`font_01_sfnt_off00007c4a.bin` `1977762bc28709f81113fe494cff4f3c19cdbbbd58cd6395a2e4d9f3b7a4be80`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C4A	10400 bytes

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