PDF malware analysis — malicious · 5cc7557b017867c7

MALICIOUS

PDF

32.9 KB Created: 2020-09-04 05:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 031254783d5463e0074b57e461f898db SHA-1: 37ba1f4c9d086d199872365b13b5c2fc5d00ce5c SHA-256: 5cc7557b017867c728ecc3e470f329eefc119a48dccde49e4c051241d3ca124b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, appears to contain the redirector URL and references to a TV show to make the lure more convincing. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning 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.club/pify?keyword=sweet+dreams+episode+13
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/0c60a0_c40d5482af334b09b3cd2c30ebe47fd7.pdf
- https://static.usrfiles.com/ugd/764aaa_85a0fbea69cc4794ab1b1a4e3e9bd51b.pdf
- https://static.usrfiles.com/ugd/b8c837_7fdb069ff4f04dcbb37ab1446f3308e2.pdf
- https://static.usrfiles.com/ugd/23e9be_e5d835e8898648bf9229d82782c1cbd1.pdf
- https://static.usrfiles.com/ugd/eb5a6a_2f5c002f61d54af68b3a184d37d99faf.pdf
- https://static.usrfiles.com/ugd/77d535_02595a712c104315a87a487f2735978a.pdf
- https://static.usrfiles.com/ugd/ce0e6d_13c4fb77335641159645a232cc5f7419.pdf
- https://cdn.shopify.com/s/files/1/0432/1958/3138/files/topidesu.pdf
- https://cdn.shopify.com/s/files/1/0429/6438/5951/files/62282719726.pdf
- https://static.usrfiles.com/ugd/c81504_b8e872cdea1843b6a4fd377f6830e94a.pdf
- https://static.usrfiles.com/ugd/2e4eb4_c6bfecc2947a4da0995e4cd091e18b26.pdf
- https://static.usrfiles.com/ugd/b8c837_35f541860a7a4d03b64aaf45e2b94f5f.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_off00004410.bin` `7a151d418fa79c33d6360522e556f6cc2e13bbc397beec27b38324b6a78a64c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4410	5484 bytes
`font_01_sfnt_off000056be.bin` `4fcaa60224551a1f74e936909c2fb1cdfbdf6ccb71fbe87d4dfa206caa9bd140`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56BE	9624 bytes

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