PDF malware analysis — malicious · dc27a1a674cf86c9

MALICIOUS

PDF

52.4 KB Created: 2020-08-31 14:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9cc86389597a20b9ecfc7231162e9fa2 SHA-1: 6db0e54f8cca3f65192c2183c8afa7c5c043b41b SHA-256: dc27a1a674cf86c9ed00235580bbe08b117dee5961f620824918a9b28f1a83bf

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a guide for factory resetting an Android phone. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation or to host further malicious content. The ML classifier strongly indicates 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=factory+reset+android+zte+model+z812
- https://cdn.shopify.com/s/files/1/0434/4827/1014/files/zopabelikowowovepe.pdf
- https://cdn.shopify.com/s/files/1/0440/2203/8686/files/freesia_planting_guide.pdf
- https://cdn.shopify.com/s/files/1/0430/5305/6149/files/bujekagokumozi.pdf
- https://cdn.shopify.com/s/files/1/0431/0958/0961/files/87590438962.pdf
- https://cdn.shopify.com/s/files/1/0466/5842/0901/files/97243658227.pdf
- https://cdn.shopify.com/s/files/1/0433/8892/8150/files/likidoninup.pdf
- https://cdn.shopify.com/s/files/1/0430/2402/3715/files/pesadugivojab.pdf
- https://cdn.shopify.com/s/files/1/0428/8171/2287/files/72312403564.pdf
- https://cdn.shopify.com/s/files/1/0430/5430/1338/files/jcb_1cx_manual.pdf
- https://cdn.shopify.com/s/files/1/0433/9869/3013/files/12488034616.pdf
- https://static.usrfiles.com/ugd/b8c837_f0cd584adfd84226944bf179f5467e41.pdf
- https://static.usrfiles.com/ugd/b8c837_222deceaae0748d1927b6cf8a0228f86.pdf
- https://static.usrfiles.com/ugd/83f04e_8669078d77d04a2699ad06ea0d6f559a.pdf
- https://static.usrfiles.com/ugd/69695d_73d6e4ee6e8843cb954afb19a6a059c1.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/1/0466/5842/0901/file

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007787.bin` `89affeb0f4430685bf97f8df82b9a9965db82d3cac6e82a069cea08ec1f251f1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7787	5360 bytes
`font_01_sfnt_off000089a7.bin` `0128f4d401c839d73c8612732aef28b85ab58f7f3fcbb4499c1227edf1fbbbab`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89A7	1872 bytes
`font_02_sfnt_off000092a4.bin` `797e7701ec593d3029354f58b5784eddfb2513350f2fceed342bda4e596be66a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92A4	10332 bytes
`font_03_sfnt_off0000b5f6.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB5F6	4324 bytes

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