PDF malware analysis — malicious · 02bfcc003944a5cf

MALICIOUS

PDF

33.1 KB Created: 2020-09-01 05:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e5375a3312bd876f06d7e75aeba6774d SHA-1: 1a6fdf83411045dadf01ddc5846bfd4c43eae237 SHA-256: 02bfcc003944a5cf63eedd997f391de3f1908590e743db6d7dacf9e9bf432441

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, with one specifically identified as a malicious redirector. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm designed to direct users to malicious content.

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.cc/wix?keyword=brocade+6505+firmware++dell
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/3646/7612/files/4633412300.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
- https://cdn.shopify.com/s/files/1/0446/6117/8521/files/from_a_jack_to_a_king_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0434/5308/7897/files/wevevifimukabut.pdf
- https://static.usrfiles.com/ugd/739437_54167ae8e2a24053b94256ef69d48de5.pdf
- https://static.usrfiles.com/ugd/dcfb95_abf9b35e5082488981339ad6daf92f8c.pdf
- https://static.usrfiles.com/ugd/8b97dd_bfe944ba280442f3a8d160ec66c384e0.pdf
- https://static.usrfiles.com/ugd/191a6d_8037dffcf7bc42158584518ba89510ce.pdf
- https://static.usrfiles.com/ugd/b85eb0_7ff0a4f5b94f4e729714eec7b3b40b72.pdf
- https://static.usrfiles.com/ugd/b8c837_2010f912381441b5922af6398d0e7fb7.pdf
- https://static.usrfiles.com/ugd/eed56f_a075e274bf0641608bf9cac35d7ea1ad.pdf
- https://cdn.shopify.com/s/files/1/0433/8774/8519/files/dreaming_small_pools_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0436/2698/7680/files/vedifovureniziperefuwaj.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004514.bin` `2f5481ad3dbd663decc0aebc62c308361fb14a30b75869178a3bbbac8539c8c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4514	5548 bytes
`font_01_sfnt_off000057f3.bin` `3f3e2d009c046201ab5f480a3f701cd5fa2f96a24fafd51c0442c190e0fcd872`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57F3	9352 bytes

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