PDF malware analysis — malicious · 1f2d4fd3e51ed6ae

MALICIOUS

PDF

41.1 KB Created: 2020-08-30 07:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d5a52d1126266c3c91d7be782095f657 SHA-1: eff92e8218136881aa2312fa2275604810e55f0e SHA-256: 1f2d4fd3e51ed6ae11038efd82cad588dee17cb0520f6cec528e83582390e41a

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF document contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. The primary malicious indicator is a link to a known malicious redirector at ttraff.com, which is disguised with a keyword related to a popular game. This suggests a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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.com/wix?keyword=clash+royale+wont+load+past+50
- https://static.usrfiles.com/ugd/b8c837_61b3d792c6924598b05474a1d9757e8c.pdf
- https://static.usrfiles.com/ugd/b8c837_abd7ae0231f74153a4cf2db03d9db9d9.pdf
- https://static.usrfiles.com/ugd/b7ed05_0887977ef99b4b0a99b9ee3ce01ddcca.pdf
- https://cdn.shopify.com/s/files/1/0437/4488/6936/files/zoluxukakotoxasixiromozi.pdf
- https://cdn.shopify.com/s/files/1/0432/3534/4539/files/strategic_management_bba.pdf
- https://static.usrfiles.com/ugd/b8c837_249d48c19f4e44d79ddff24efe81c97d.pdf
- https://static.usrfiles.com/ugd/01bc73_ab94197c155a4415a5dd432e608b846e.pdf
- https://static.usrfiles.com/ugd/b8c837_a0d94ff95558444b8022f497068e32ae.pdf
- https://static.usrfiles.com/ugd/b8c837_38f41229ab5145edbf50adf1b5c48933.pdf
- https://cdn.shopify.com/s/files/1/0439/0181/2904/files/beethoven_biography.pdf
- https://cdn.shopify.com/s/files/1/0438/9784/7976/files/boat_bill_of_sale.pdf
- https://cdn.shopify.com/s/files/1/0432/8158/0200/files/37450585236.pdf
- https://cdn.shopify.com/s/files/1/0432/0821/2638/files/49113279230.pdf
- https://cdn.shopify.com/s/files/1/0431/8865/0142/files/62412916968.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_off0000618e.bin` `c43c9f1cda0b0cc9f1ec91bba787c8b1cfa8ce9da26491e5b2eea5d64317d81e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x618E	5412 bytes
`font_01_sfnt_off00007405.bin` `3997c6a28dc8d6119937f453a6d69262c3d4f7e1d12e5c9bc90dcc1b9574616c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7405	10764 bytes

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