PDF malware analysis — malicious · 0257189f1284c998

MALICIOUS

PDF

47.7 KB Created: 2020-09-02 16:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5f104511954f006528bda7974504d2aa SHA-1: 5c70bea5166a20287131c1cb3ca80dabc88a427e SHA-256: 0257189f1284c998004d8d1e13ce082c42445c50722d754e8d82c6fb2b246835

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The embedded content, though obfuscated, includes the malicious URL and references a game guide, suggesting a lure to trick users into clicking the link. The ML classifier strongly supports the malicious verdict.

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/wix?keyword=crusaders+of+light+mystic+dps+guide
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://cdn.shopify.com/s/files/1/0433/5275/2283/files/4662278106.pdf
- https://cdn.shopify.com/s/files/1/0435/2488/2583/files/broken_angel_song_english_version.pdf
- https://cdn.shopify.com/s/files/1/0430/9454/0439/files/3890521491.pdf
- https://static.usrfiles.com/ugd/11b39a_4be77646a7de441e955d6fde3ed13e72.pdf
- https://static.usrfiles.com/ugd/b8c837_8f537d568060488083cfdf7324a94cd4.pdf
- https://static.usrfiles.com/ugd/b58d21_033326f9f5c0454f82a2d8cf580e04fc.pdf
- https://static.usrfiles.com/ugd/3615fb_8307b0e31dd84dfa87c9ee993bed6870.pdf
- https://cdn.shopify.com/s/files/1/0432/7391/2488/files/wudifisimasuvekolexerilew.pdf
- https://cdn.shopify.com/s/files/1/0430/3942/4669/files/pibowuvefegiwuxofisidam.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006ef2.bin` `2eacf878fbd39ec87be672164df84eae0efae0eeb278e92d447f05e3500ba8ac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EF2	5472 bytes
`font_01_sfnt_off0000819d.bin` `9e6e445accc55212ad895219aa89b33ada3ad952a57cdea36d07d96844dfe0fa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x819D	10120 bytes
`font_02_sfnt_off0000a43b.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA43B	4324 bytes

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