PDF malware analysis — malicious · 864f3c83d209ca70

MALICIOUS

PDF

46.5 KB Created: 2020-11-02 05:19:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ac49ab06fa5b64602919273ba246b0ca SHA-1: 1d42f2a02a648db54d0daba74ab590e3d6c92367 SHA-256: 864f3c83d209ca70be5864266473a93b6da01512900467073d95ecd041016063

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to malicious content. It also features a link farm of numerous other PDF documents, likely for SEO manipulation or to obscure the malicious link. The ML classifier strongly flagged this PDF as malicious.

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://gettraff.ru/123?keyword=a+reaper+at+the+gates+pdf
- https://wuxepufoz.weebly.com/uploads/1/3/4/3/134371519/wekupiseneti.pdf
- https://depufavekozumel.weebly.com/uploads/1/3/4/0/134017714/pevijulufav_sodubaw.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/pazifetanegapu/indian_express_epaper_mumbai.pdf
- https://cdn.shopify.com/s/files/1/0268/6998/9559/files/lexadejawavavanijeroxo.pdf
- https://cdn.shopify.com/s/files/1/0500/5652/8032/files/dragonfly_life_cycle_images.pdf
- https://cdn.shopify.com/s/files/1/0435/8982/8771/files/sujawomizu.pdf
- https://s3.amazonaws.com/rizezobabub/65926737457.pdf
- https://s3.amazonaws.com/pujirageg/app_to_translate_english_to_spanish.pdf
- https://s3.amazonaws.com/panokojol/come_prepararsi_all_esame_del_celi_5.pdf
- https://s3.amazonaws.com/gupawupigawono/boganu.pdf
- https://cdn.shopify.com/s/files/1/0501/6223/7621/files/bacopa_monnieri_medicinal_uses.pdf
- https://s3.amazonaws.com/muxozuvalubi/vijezokosemipodofaxuje.pdf
- https://s3.amazonaws.com/susopuzupure/phosphatic_fertilizers.pdf
- https://s3.amazonaws.com/ravuxudibure/pdf_books_download_app.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_off00007669.bin` `cbd2a7cb89ad30f660b8bebe4c5e7e4cf5b9372e394169efde7cec0030d131f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7669	5260 bytes
`font_01_sfnt_off00008846.bin` `d5ed8c7533d79704a32a005bc4895f443d493bbc76504c6ce957be4a305a1842`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8846	10972 bytes

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