PDF malware analysis — malicious · 79f580bc7bb4240b

MALICIOUS

PDF

49.0 KB Created: 2020-10-15 07:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: a1e3bf6d20ea43b056e8ecdbc72f57d1 SHA-1: 6b2062fea201e91abad20b621a8be46b1edcec31 SHA-256: 79f580bc7bb4240b808fc2c5dc18157a79a60cf14875827d2a8ab8a9aa992271

184 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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/pify?keyword=portuguese+pronunciation+guide+pdf In PDF document text
- https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/teximajovevogekapad.pdfIn PDF document text
- https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/b93596ac8598268.pdfIn PDF document text
- https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kekikefuwu.pdfIn PDF document text
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/vaxukekiwurefebe.pdfIn PDF document text
- https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/forukoxofi_metizubaxanava_bezurese_lirekox.pdfIn PDF document text
- https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/nibezefosir-wonabodafiduw.pdfIn PDF document text
- https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279107.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366042/normal_5f87080e54816.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365642/normal_5f87a8850a31d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/73bcae79-0a26-4616-818b-6eb6503036ed/24711346451.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0d1c5b1a-dbfe-490a-8cb1-6c98436f8514/sarojometosojuxevikanewux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c04b2b88-e79d-4941-9a12-fb559c82eabb/pitebijagezogef.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c0c74e44-bbe4-4caa-941a-b9d7fd3058c7/wuparamelowirogonide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7118eab-b49d-4054-ae05-bf47c22f9a1c/37985489582.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/df88874e-91c3-4ee0-a88b-a621058d4d89/76867683469.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/12c217d1-2320-4555-a2c1-b9835e78d659/nijurigigirimod.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f200296-3b7f-44ad-9911-edb1fe38cdd7/10880869610.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3503e988-b7cd-4fe9-ad32-57022d8d0cc7/titazebevoporegidomamegif.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3fe44fac-1715-4aea-a402-28ab430f2cae/92470948375.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/85cef7ba-ae01-46fe-997d-d1f354b9ac4d/45827113059.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000069e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69E8	5292 bytes
SHA-256: `ca9573b514af3444563d68921c8d6c8e0a01a6ceafd46410c8840592ea1becad`
`font_01_sfnt_off00007c01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C01	10984 bytes
SHA-256: `85160948e8bef4f00fe39c907af4e53b1c5156a2c0bf6e8df1d1f5135655ed83`
`font_02_sfnt_off0000a199.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA199	16100 bytes
SHA-256: `2f34e2a47881d07bf5e0ddcec7fa78b88f5f828504524ebfdba63e029b22e37e`

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