PDF malware analysis — malicious · cfb3884daafda3fd

MALICIOUS

PDF

40.6 KB Created: 2020-11-09 16:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 290c13ec23a4ea27b9ed90f8b82c926a SHA-1: cc000944b4b5065bdce91c028892c9df159a741a SHA-256: cfb3884daafda3fd3793c113538dee9a830d0f3204b3177fc0aee5d9f780bd0d

66 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://trafffi.ru/123?keyword=capitals+schedule+2020-21 PDF link annotation
- https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/32f1e16000bb.pdfIn PDF document text
- https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/95a6027879.pdfIn PDF document text
- https://wozofawado.weebly.com/uploads/1/3/0/8/130874325/demedepomufin_fezarif_zibawixiwib.pdfIn PDF document text
- https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/gekawaviwulezavu.pdfIn PDF document text
- https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/vujoj_fidud.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416500/normal_5fa3483fcc746.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369503/normal_5f8f2f8ea6265.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365551/normal_5f99645194536.pdfIn PDF document text
- https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/xupabozividefirupax.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/jagux/26968251657.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/nitracion_de_alcanos.pdfIn PDF document text
- https://s3.amazonaws.com/sabegokek/busybox_pro_apk_free.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_off000062df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62DF	5328 bytes
SHA-256: `a99e5d4f7561bacd3db9c91d9a2dd6c3a545a5bff678f096d5092189248e42ae`
`font_01_sfnt_off000074fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74FC	9628 bytes
SHA-256: `7b67a96742c15e5ab574bf455a94564927053eb73903a45014e52ab0261d80b7`

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