PDF malware analysis — malicious · aca98c9021b000a6

MALICIOUS

PDF

72.3 KB Created: 2020-07-30 22:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9c703a4bf9daf6d283efc3b90111ea6b SHA-1: b7c7844677eb4ffa2f53cb924369530dfbae766a SHA-256: aca98c9021b000a6565eed84bed18231814d535888f77ebdbfd4bf1a029705d1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing lure. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the ttraff.cc redirector, which likely leads to a malicious payload or phishing page.

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=non+abelian+group+pdf
- http://files.rustnj.com/uploads/1/3/1/8/131871670/jimepev_rusinaworom.pdf
- http://files.philipchindamo.net/uploads/1/3/1/0/131070920/zevalepobaxa_lebisuxe_xoxalobe.pdf
- http://files.1817.co.uk/uploads/1/3/2/6/132681317/e457965e8c4.pdf
- https://cdn.shopify.com/s/files/1/0432/3845/7501/files/zuwugumi.pdf
- https://cdn.shopify.com/s/files/1/0432/5064/7202/files/54973546815.pdf
- https://cdn.shopify.com/s/files/1/0432/6719/5040/files/derenurorumuru.pdf
- https://cdn.shopify.com/s/files/1/0437/6972/5085/files/25359816477.pdf
- https://cdn.shopify.com/s/files/1/0437/5809/2439/files/27542335251.pdf
- https://cdn.shopify.com/s/files/1/0440/4799/0934/files/nanemitosal.pdf
- https://cdn.shopify.com/s/files/1/0431/0564/8807/files/14047217274.pdf
- https://cdn.shopify.com/s/files/1/0438/0000/2717/files/94092458387.pdf
- https://cdn.shopify.com/s/files/1/0430/3749/1354/files/87654861022.pdf
- https://cdn.shopify.com/s/files/1/0437/0874/3834/files/67343920935.pdf
- https://cdn.shopify.com/s/files/1/0429/4439/7468/files/60294539462.pdf
- https://cdn.shopify.com/s/files/1/0432/0218/3325/files/42126990195.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32808714247.pdf
- https://cdn.shopify.com/s/files/1/0431/0158/5569/files/gogowev.pdf
- https://cdn.shopify.com/s/files/1/0430/9814/4932/files/58795008398.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_off0000b910.bin` `8431f9cf02cce7f773c2c6bfc2950d08129adc9e4fa28cfb093f76327419d27d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB910	4944 bytes
`font_01_sfnt_off0000c9e4.bin` `159cab8e2a2dfbda03dccb920da1e49a66f9acbc15f4e4234a0257fcb1d2bb4a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC9E4	15996 bytes
`font_02_sfnt_off0000fb5e.bin` `9c780b3e7e63e1124e522bc39b9c30893b2ee17a283a6784d8ac542a1315d537`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB5E	16884 bytes

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