PDF malware analysis — malicious · 7c7e17fefcef7af1

MALICIOUS

PDF

56.7 KB Created: 2020-08-03 02:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b71e5e6f7556e49132dd02b094481108 SHA-1: f8ca087340af67a9337a749863d6f452b13e2a14 SHA-256: 7c7e17fefcef7af13548533b01eeb8983b0c151287eab271528be7cdcb1811f2

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is https://ttraff.cc/pify?keyword=watermelon+farm+minecraft, which is known to lead to malicious infrastructure. The document body is heavily obfuscated but contains references to the redirector URL. The ML classifier also strongly indicated maliciousness.

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=watermelon+farm+minecraft
- http://files.nakuspcreations.com/uploads/1/3/2/8/132814048/ee0b8867a4.pdf
- http://files.omarturbi.org/uploads/1/3/0/7/130776484/zurovijafu.pdf
- http://files.mtviewcrc.org/uploads/1/3/1/8/131871515/dofebekuwosuxoka.pdf
- http://files.wisdomboulevard.com/uploads/1/3/0/7/130775959/06e37366527997.pdf
- https://cdn.shopify.com/s/files/1/0429/2637/5071/files/vasuwafazawokubegul.pdf
- https://cdn.shopify.com/s/files/1/0433/7015/2088/files/32255394626.pdf
- https://cdn.shopify.com/s/files/1/0428/9432/7975/files/12442943045.pdf
- https://cdn.shopify.com/s/files/1/0439/1639/4648/files/70210166422.pdf
- https://cdn.shopify.com/s/files/1/0432/0083/9842/files/62667104540.pdf
- https://cdn.shopify.com/s/files/1/0433/9240/1573/files/vibolojadifirozewe.pdf
- https://cdn.shopify.com/s/files/1/0432/4222/5832/files/33618816074.pdf
- https://cdn.shopify.com/s/files/1/0429/8221/1735/files/daletojixorugosonofo.pdf
- https://cdn.shopify.com/s/files/1/0438/9080/2856/files/xafuradatonoporam.pdf
- https://cdn.shopify.com/s/files/1/0431/8127/7352/files/refanananafixafukajupirav.pdf
- https://cdn.shopify.com/s/files/1/0429/8624/2209/files/36861436310.pdf
- https://cdn.shopify.com/s/files/1/0433/4511/7342/files/jalakimisojokobozujat.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85484739365.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_off000093c1.bin` `62ab1e14524510079c606c69fbc16c7b3cbc142a39a18f1d0cf6ed51f31fc439`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93C1	4652 bytes
`font_01_sfnt_off0000a379.bin` `e4e683c93dcec465c50d9675ad4784a567cf7722006fdb1d1eb125f93c2fd156`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA379	10632 bytes
`font_02_sfnt_off0000c7c0.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC7C0	4324 bytes

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