PDF malware analysis — malicious · d2db80669c19fe3b

MALICIOUS

PDF

49.0 KB Created: 2020-10-25 16:35:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 8da97521cdfcf54c2c93ce670a8ddd97 SHA-1: 7a4a21cb39ca5c13d6400c4ac6534e8f4e8437a7 SHA-256: d2db80669c19fe3bf16157a2c5719f4c73404fbfacc4db24c43e11332dc09575

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to lead the user to a harmful site. The ML classifier strongly flagged this PDF as malicious. The embedded URL 'https://ggtraff.ru/pify?keyword=forever+21+application+pdf' is a primary indicator of malicious redirection, likely serving as a lure for further malicious activity.

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://ggtraff.ru/pify?keyword=forever+21+application+pdf In PDF document text
- https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/3217034.pdfIn PDF document text
- https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/6420032.pdfIn PDF document text
- https://jikubefu.weebly.com/uploads/1/3/4/3/134318914/86e4f49.pdfIn PDF document text
- https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/1256231.pdfIn PDF document text
- https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/e20be82686.pdfIn PDF document text
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/fibawubaxavuvabu.pdfIn PDF document text
- https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
- https://jiwamotezonadiw.weebly.com/uploads/1/3/4/3/134325797/ramejun.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365634/normal_5f8754c2b7200.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374533/normal_5f8ed2e3ea97a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366385/normal_5f8f3e4d20374.pdfIn PDF document text
- https://tumovapexawezan.weebly.com/uploads/1/3/1/3/131398362/kobewekube-jusemo.pdfIn PDF document text
- https://dafebifu.weebly.com/uploads/1/3/4/3/134399244/58281c2becee1d.pdfIn PDF document text
- https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/8045519.pdfIn PDF document text
- https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/6fbee1.pdfIn PDF document text
- https://fukikabigo.weebly.com/uploads/1/3/4/4/134457586/1915096.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/henghuili-files/diccionario_de_armando_hoyos_completo_descargar.pdfIn PDF document text
- https://s3.amazonaws.com/jamokaroxoj/caccia_al_tesoro_nell_universo.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/le_gall_brownian_motion_martingales_and_stochastic_calculus.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/zadegisukazegozini.pdfIn PDF document text
- https://s3.amazonaws.com/gewuwasi/44247032667.pdfIn PDF document text
- https://s3.amazonaws.com/gupuso/advanced_excel_2013_book.pdfIn PDF document text
- https://s3.amazonaws.com/bubodeliza/98994215576.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007165.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7165	4960 bytes
SHA-256: `db68784ee5f64a0b892c02926a3699e0f7221c0f27ce546613f2765ffe21cf38`
`font_01_sfnt_off00008259.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8259	11296 bytes
SHA-256: `8ce8863eeb40aecacbcb2f2f6a01548c17fa0517752ab6d69634e406400de5ff`
`font_02_sfnt_off0000a889.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA889	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

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