PDF malware analysis — malicious · 31900fc633afa346

MALICIOUS

PDF

47.6 KB Created: 2020-11-03 20:27:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 532f2ede57b287dd6acac08407764390 SHA-1: d64f263d288d6efff677789e42cf5655985a891a SHA-256: 31900fc633afa34608c03ce6c0d767ddf6660c7d07d95a3569b2508e07ac245c

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to malicious content or phishing pages. The embedded URL in the document body, also pointing to ttraff.com, reinforces this malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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.
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/123?keyword=dantdm+plays+riddle+school+5
- https://cdn-cms.f-static.net/uploads/4366032/normal_5f8d6e70b255f.pdf
- https://cdn-cms.f-static.net/uploads/4402261/normal_5f93d3c90c39a.pdf
- https://cdn-cms.f-static.net/uploads/4373757/normal_5f94750493abe.pdf
- https://cdn-cms.f-static.net/uploads/4382789/normal_5f94249a67e85.pdf
- https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/xezuforipofara_najuz_wexebutiji.pdf
- https://dowikonusinewe.weebly.com/uploads/1/3/4/3/134374018/dofuz-rugazekipamoso-xevadutixapat.pdf
- https://jizufolikoni.weebly.com/uploads/1/3/4/3/134349493/fikigefoxo.pdf
- https://bipikive.weebly.com/uploads/1/3/4/3/134342269/9152932.pdf
- https://kizilezena.weebly.com/uploads/1/3/4/3/134354573/nuxujibufemoxulokod.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/sazixipame/zonodeluz.pdf
- https://s3.amazonaws.com/muvojugejoxip/92044125210.pdf
- https://uploads.strikinglycdn.com/files/f1acea2b-1c5c-4680-9a97-725112b54882/junimigu.pdf
- https://s3.amazonaws.com/kalufizefem/super_king_market_address.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_off00006a92.bin` `3bd03dff2a1676573d14e1d8af151f9e7012e4a2a62ea62eadca11e039a6a818`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A92	5324 bytes
`font_01_sfnt_off00007c85.bin` `17944897efe409e8f1f319104428894cfa8dabfb8726ee2aa63142e2a9ae9c5d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C85	11440 bytes
`font_02_sfnt_off0000a3c4.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA3C4	4324 bytes

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