PDF malware analysis — malicious · ecb591e17ac10639

MALICIOUS

PDF

39.6 KB Created: 2020-10-31 00:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 21e07f11a605ba353713e29c7a4725c2 SHA-1: c6c7a4b4f7fcab77b9ec6ec2741657d18c0d7f63 SHA-256: ecb591e17ac1063992f27be56573450deb5d063754e1e26f14fad60fc97bdecd

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.cc, which is designed to obscure the final destination. The ML classifier also strongly indicated maliciousness. The embedded URL likely leads to a phishing page or a download of further malicious content.

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.cc/pify?keyword=helms+auto+manuals In PDF document text
- https://guxolufesa.weebly.com/uploads/1/3/4/4/134468064/pufovogejixilot-fotet-xenasog-sabumesesafif.pdfIn PDF document text
- https://suvojenedixu.weebly.com/uploads/1/3/4/3/134354738/cb2455.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387427/normal_5f8e3ce26429d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408009/normal_5f92a2af92cc6.pdfIn PDF document text
- https://bokixewabukogu.weebly.com/uploads/1/3/4/3/134341992/358788a515de.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/9269/5968/files/un_elefante_se_balanceaba_acordes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0477/6479/9644/files/channel_7_tv_guide_football.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b3ad5c16-7f6e-43ad-a938-ed4d6e3f5aed/bugigepivefom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9145/2314/files/vovorupasile.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/3146/8453/files/sabitri_brata_katha_odia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8163/7794/files/manuale_digitale_intuitext_clasa_4_geografie.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005e31.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E31	4696 bytes
SHA-256: `905b87c2d44a722f53a0b22684aa6d06e1a7b09a06b8e23d7e9296d575ddbd89`
`font_01_sfnt_off00006e0f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E0F	10560 bytes
SHA-256: `5ffe4c81061c7fa87302596ff230a0954991dcc190aa077907fa0610812e878e`

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